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Photoelectron spectra of infinitenes and topoisomers J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2024-03-13 Igor Novak
The vertical, valence ionization energies of some [12]circulenes (CH) topoisomers have been calculated as free molecules in the gas phase using high-level ab initio coupled-cluster method: EOM-DLPNO-CCSD. Their valence electronic structures depend on molecular topology. We have used calculated vertical, valence ionization energies to simulate their UV photoelectron spectra (UPS). HOMO-LUMO bandgaps
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Calculations of electron scattering cross sections from tungsten precursors used in FEBID J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2024-03-04 Meenu Pandey, Bobby Antony
In this work, the integral elastic, inelastic, ionization, and momentum transfer scattering cross sections of , , and molecules are calculated using a quantum mechanical method. These are considered precursors for tungsten deposition using the focused electron beam-induced deposition (FEBID) technique. The spherical complex optical potential (SCOP) formalism is used to figure out the total elastic
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Investigation of the doubly excited [formula omitted] resonance series in C[formula omitted] ion J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2024-02-17 Stéphane Laulan, Marc-André Albert, Samira Barmaki
We investigate in the present paper the doubly excited states in the C ion. We report highly accurate results of their energy positions in the energy spectrum, their lifetimes and the x-ray photon energies required to populate them and observe their autoionization. The results were obtained by using our B-spline based spectral approach combined with the complex rotation method that has proven its effectiveness
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Generalized oscillator strengths and integral cross sections of krypton studied by high-energy electron scattering J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2024-02-16 Wan-Lu Ma, Shu-Xing Wang, Zhi-Wei Nie, Jian-Hui Zhu, Jin-Feng Chen, Lin-Fan Zhu
Absolute generalized oscillator strengths of the valence-shell excitations of krypton have been determined with an incident electron energy of 1500 eV and an energy resolution of about 80 meV. By employing the relative flow technique with a dilute target, the pressure effect is excluded and the accuracy of the measured generalized oscillator strengths is improved. By comparing the present generalized
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Structural studies of Prussian Blue Analogs containing trivalent hexacyanoferrate by extended X-ray absorption fine structure spectroscopy J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2024-02-14 Toshiaki Iwazumi, Akihito Kusumoto, Ryohei Takeshita, Daisuke Kobayashi, Hiroko Tokoro, Kosuke Nakagawa, Shin-ichi Ohkoshi
The structure of 10 Prussian Blue Analogs containing trivalent hexacyanoferrate was investigated by extended X-ray absorption fine structure spectroscopy at the Fe 1 edge and the transition metal 1 edges. Despite the changes in physical properties due to differences in the non-iron transition metal and the interatomic distance between Fe and the non-iron transition metal, there was almost no change
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Theoretical investigation of magnetic-field and hyperfine-induced transition parameters for magnesium-like and chlorine-like ions J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2024-01-19 Zhanbin Chen
In this paper, we report an extensive theoretical study of the magnetic-field and hyperfine-induced transition parameters for magnesium-like ions from Cr XIII to Zn XIX and chlorine-like ions from Mn IX to Co XI. These ions have a high abundance in the astrophysical plasma. Zeeman splitting level energies, hyperfine- and/or magnetic-field dependent wavelengths, and transition rates of the 3s3p 3P2
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Core-to-core X-ray emission spectra from Wannier based multiplet ligand field theory J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2024-01-19 Charles A. Cardot, Joshua J. Kas, Jared E. Abramson, John J. Rehr, Gerald T. Seidler
Recent advances using Density Functional Theory (DFT) to augment Multiplet Ligand Field Theory (MLFT) have led to ab-initio calculations of many formerly empirical parameters. This development makes MLFT more predictive instead of interpretive, thus improving its value for studies of highly correlated 3d, 4d, and f-electron systems. Synchrotron time is always at a premium, and tools that provide predictive
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Electron and positron impact differential cross sections for the (e,2e) process on water molecule J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2024-01-05 B. Mandal, M. Mondal, D. Jana, T. Mistry, A. Haque, M. Purkait
We present a theoretical study for electron and positron-impact ionization of water molecule by using the three-body formalism of distorted-wave approximation. In this approximation, the final state contains one-Coulomb, two-Coulomb, and three-Coulomb distortion due to pairwise Coulombic interactions, respectively. In the entrance channel, the initial state is a product of two wavefunctions: the first
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An extreme ultraviolet 2e-ARPES setup based on dual time-of-flight analyzers J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-12-16 Jack Zwettler, Henry Amir, Faren H. Marashi, Nina Bielinski, Sahaj Patel, Pranav Mahaadev, Yijing Huang, Dipanjan Chaudhuri, Xuefei Guo, Tai Chang Chiang, Dirk K. Morr, Peter Abbamonte, Fahad Mahmood
Measuring the momentum and energy distribution of photoemitted correlated electron pairs is a promising approach to directly probe the nature of electron–electron interactions in quantum materials. In this work, we present a two electron angle resolved photoemission spectroscopy (2e-ARPES) setup based on two time-of-flight (TOF) analyzers and a gas fiber high-harmonic generation (HHG) extreme ultraviolet
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Electronic structure and resonant inelastic x-ray scattering in the mixed 3d-5d transition-metal oxides Sr3CuIrO6, Sr3CuPtO6, and Sr3ZnIrO6 J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-12-16 V.N. Antonov, D.A. Kukusta, L.V. Bekenov
We have investigated the electronic and magnetic properties of one-dimensional Sr3CuIrO6, Sr3ZnIrO6, and Sr3CuPtO6 oxides within the density-functional theory (DFT) using the generalized gradient approximation while taking into account strong Coulomb correlations (GGA+U) in the framework of the fully relativistic spin-polarized Dirac linear muffin-tin orbital band-structure method. The strong spin–orbit
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Identification of electronic dimensionality reduction in semiconductor quantum well structures J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-12-06 Takahito Takeda, Kengo Takase, Vladimir N. Strocov, Masaaki Tanaka, Masaki Kobayashi
Two-dimensional (2D) systems, such as high-temperature superconductors, surface states of topological insulators, and layered materials, have been intensively studied using vacuum-ultraviolet (VUV) angle-resolved photoemission spectroscopy (ARPES). In semiconductor films (heterostructures), quantum well (QW) states arise due to electron/hole accumulations at the surface (interface). The quantized states
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Corrigendum to “Dissociative electron attachment to 1- and 9-chloroanthracene in the gas phase” [J. Electron Spectrosc. Relat. Phenom. 267 (2023) 147383] J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-12-06 N.L. Asfandiarov, M.V. Muftakhov, S.A. Pshenichnyuk
Abstract not available
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Editorial Board J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-12-03
Abstract not available
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L-MM Auger electron emission from chlorinated organic molecules under proton impact: Angular distribution and total cross section measurement J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-11-30 Rohit Tyagi, Abhijeet Bhogale, Sandeep Bari, L.C. Tribedi, A.H. Kelkar
We have measured the absolute cross section for L-MM Auger electron emission in chlorinated methanes and benzene chloride molecules in collision with keV energy protons. The measurements have been performed with four different chlorine containing organic molecules viz CCl4, CHCl3, CH2Cl2 and C6H5Cl. We have measured the angular distribution of chlorine L-MM Auger electrons at backward emission angles
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Ionization of CH4 under fast He-like Si-ion impact J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-11-20 Debasmita Chakraborty, Sanjeev Maurya, Laszlo Gulyás, Abhijit Bhogale, Chandan Bagdia, Nilesh Mhatre, Debashis Biswas, Lokesh C. Tribedi
We have studied the absolute double differential cross section (DDCS) of electrons ejected from the methane molecule (CH4) under the impact of highly charged fast projectile ions. The energy and angular distributions of electrons have been measured in interactions with 70 MeV Si12+ ions. These DDCS data together with the derived single differential cross sections and the total cross section (TCS) have
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Editorial Board J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-10-31
Abstract not available
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Core hole electron screening in InSb J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-10-30 A. Alsawi, C.R.J. Sait, D. Hesp, P. Unsworth, M.J. Ashwin, V.R. Dhanak, T.D. Veal, P. Weightman
The application of a potential model to the analysis of differences between the Auger parameters of InSb and the elemental materials yields a value 1.82±0.07Å for the core hole screening distance in InSb. It also yields a value of 0.22 ± 0.49 e for the charge transfer in InSb. Shifts in the Auger parameters of elements between their metallic states and in a compound semiconductor are interpreted using
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Effect of L-shell spectator vacancies on the competition of filling the K, L1 and L23 vacancies and the natural widths of K-shell hole states of argon ions J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-09-30 Xiangli Wang, Lan Yang, Baixing Liu, Guoheng Zhang, Xiaoyong Li, Cairang LiMao
The radiative and Auger decay of K-shell hole states of argon ions with configuration 1s2sm2pn3 s23p6 (m=0–2; n = 0–6) are studied theoretically using the flexible atomic code. The effect of L-shell spectator vacancies on the competition of filling the K, L1, and L23 vacancies is discussed for the first time. We find the K or L1 vacancy is preferred to be filled first when there is 0 or 1 vacancy in
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Editorial Board J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-09-09
Abstract not available
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Influence of a static electric field on magnetic materials monitored by X-ray magnetic circular dichroism J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-09-09 H. Ebert, S. Mankovsky, A. Marmodoro, E. Simon
The magnetic circular X-ray dichroism (XMCD) in X-ray absorption spectroscopy (XAS) is extensively used to monitor the response of a magnetic system to an external perturbation. Application of a static external electric field to control its magnetic properties may just lead to a charge rearrangement or to a steady electric current dependent on the geometry. As it is demonstrated, the first situation
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A quantitative evaluation of the 2nd derivative mode in electron energy loss spectroscopy J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-09-06 J.G. Tobin
The second derivative mode of peak analysis in electron energy loss spectroscopy (EELS) in a Transmission Electron Microscope (TEM) has been quantitatively evaluated in terms of the accuracy of the method. This includes a demonstration of the importance of the second derivative peak width, the second order dependency of the accuracy upon that peak width and effect of high frequency noise in the spectra
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Soft X-ray microspectroscopic imaging studies of exfoliated surface between fluoropolymer and Cu plate directly bonded by plasma irradiation with ammonia gas J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-09-02 A. Yamaguchi, S. Ikeda, M. Nakaya, Y. Kobayashi, Y. Haruyama, S. Suzuki, K. Kanda, Y. Utsumi, T. Ohkochi, H. Sumida, M. Oura
The F, C, O, and N elemental distribution maps at the exfoliated surfaces of Cu plate after peeling the fluoropolymers from Fluorinated ethylene propylene (FEP)/Cu and Perfluoroalkoxyalkane (PFA)/Cu pieces which were bonded by plasma treatment including amino acid were performed by microscopic synchrotron radiation (SR) spectroscopic imaging measurements. The spatial elemental distribution pattern
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Soft X-rays radiation damage on plunge-frozen and freeze-dried maize roots evaluated by FTIR spectromicroscopy J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-08-19 A. Gianoncelli, M. Žižić, V. Bonanni, G. Birarda, D.E. Bedolla, K. Vogel Mikuš
The radiation damage issue consequent to soft X-rays’ exposure is still an important aspect to be contemplated in soft X-ray microscopy. The work presented here is part of a more extended investigation on the topic and targets the effects of soft X-rays exposure on plant tissues. The aftermaths of soft X-rays’ exposure were evaluated by FTIR spectromicroscopy by comparing irradiated and non-irradiated
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Dissociative electron attachment to 1- and 9-chloroanthracene in the gas phase J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-08-01 Nail L. Asfandiarov, Mars V. Muftakhov, Stanislav A. Pshenichnyuk
Dissociative electron attachment (DEA) to 1-chloroanthracene and 9-chloroanthracene was investigated under gas-phase conditions. In both compounds, the elimination of the chlorine anion is the dominant channel for the dissociation of molecular negative ions (NIs). The second most intense channel leads to the formation of molecular anions (Mˉ). The autodetachment lifetime of Mˉ was measured to be about
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Network formation and differentiation of chitosan–acrylic acid hydrogels using X-ray absorption spectroscopy and multivariate analysis of Fourier transform infrared spectra J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-27 Kathrina Lois M. Taaca, Hideki Nakajima, Kanjana Thumanu, Eloise I. Prieto, Magdaleno R. Vasquez
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Electron scattering at high momentum transfer J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-28 Maarten Vos
Energetic (multiple keV) electrons scattering at high momentum transfer (i.e. scatter over a large angle (>20°)) interact with a single particle, either a nucleus or a target electron. Energy transfer is then determined by the incoming energy, scattering angle and the mass and velocity of the scattering particle. When scattering from a target electron a large fraction of the incoming energy is transferred
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Development of soft X-ray ptychography and fluorescence microscopy system using total-reflection wolter mirror and application to measurement of drug-treated mammalian cells J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-26 Yoko Takeo, Kai Sakurai, Noboru Furuya, Kyota Yoshinaga, Takenori Shimamura, Satoru Egawa, Hisao Kiuchi, Hidekazu Mimura, Haruhiko Ohashi, Yoshihisa Harada, Mari Shimura, Takashi Kimura
We developed a soft X-ray microscopic imaging system, CARROT, that combines ptychography and fluorescence X-ray microscopy using a total-reflection Wolter mirror illumination system. The system offers advantages such as achromaticity and long working distances, enabling seamless application to a wide wavelength range. We demonstrated high-resolution imaging of cellular structures and sub-micrometer-scale
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Scanning transmission X-ray microscopy at the Advanced Light Source J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-22 Thomas Feggeler, Abraham Levitan, Matthew A. Marcus, Hendrik Ohldag, David A. Shapiro
Over 50 years of development, synchrotron based X-ray microscopy has become a routine and powerful tool for the analysis of nanoscale structure and chemistry in many areas of science. Scanning X-ray microscopy is particularly well suited to the study of chemical and magnetic states of matter and has become available at most synchrotron light sources using a variety of optical schemes, detectors and
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Present status and recent progress of research, using photoemission-electron microscopy at SPring-8 J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-14
Photoemission electron microscopy (PEEM), particularly when combined with synchrotron radiation, exerts a powerful functionality in spectroscopy applications. The use of PEEM has steadily expanded the availed analysis objects at the SPring-8 synchrotron facility, such as magnetic materials, thin-film devices, semiconductors, monolayers, extraterrestrial matter, and multiferroics. Some special experimental
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EXAFS study of the local environment of lead and iron sorbed onto volcanic ash J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-15 Bridinette Thiodjio Sendja, Duclair Tchana Kamgne, Rene Loredo Portales, Giuliana Aquilanti
This work focuses on the EXAFS investigation of the local environment of lead and iron sorbed onto volcanic ash materials previously studied using XANES technique. Different compounds found in the composition of volcanic ash were used as the models in the EXAFS fitting procedure of the experimental EXAFS spectra collected at the Fe K edge and Pb L3 edge in the Fe- and Pb-sorbed volcanic ash samples
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Making chemical sense of phase in soft X-ray spectroptychography J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-12
Spectroptychography is being used to realize a significant improvement in the spatial resolution of x-ray spectromicroscopy, allowing chemical microanalysis at finer spatial scales. The chemical sensitivity of near edge X-ray absorption fine structure (NEXAFS) is familiar to most researchers who use x-ray spectromicroscopy for chemical microanalysis. However, the additional phase information available
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Atomically dispersed Ni-N-C electrocatalysts, studied by Ni L-edge spectro-ptychography J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-01 Chunyang Zhang, Jiatang Chen, Hao Yuan, Jian Wang, Tianxiao Sun, Drew Higgins, Adam P. Hitchcock
Soft X-ray spectro-ptychography of nickel-nitrogen-carbon electrocatalysts containing atomically dispersed Ni-based active sites were measured at the Ni L3 edge. Samples prepared with two different loadings of Ni precursors were investigated and compared to the results of an earlier study using scanning transmission X-ray microscopy (STXM) [Zhang et al., ACS Catalysis 12 (2022) 8746]. The ptychography
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Scanning transmission soft X-ray spectromicroscopy of mouse kidney and liver J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-05 Tuomas Mansikkala, Takuji Ohigashi, Miia H. Salo, Anniina E. Hiltunen, Reetta Vuolteenaho, Petra Sipilä, Satu Kuure, Marko Huttula, Johanna Uusimaa, Reetta Hinttala, Ilkka Miinalainen, Salla Kangas, Minna Patanen
Scanning transmission X-ray microscopy (STXM) in the soft X-ray range is well-suited to study ultrastructural features of mammalian soft tissues. Especially at the carbon 1s edge, the imaging contrast varies drastically across the edge due to rapid changes in the X-ray absorption cross-section of functional groups present in the tissue samples enabling label-free soft X-ray spectromicroscopic studies
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Sample structure prediction from measured XPS data using Bayesian estimation and SESSA simulator J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-06 Hiroshi Shinotsuka, Kenji Nagata, Malinda Siriwardana, Hideki Yoshikawa, Hayaru Shouno, Masato Okada
We have developed a framework for solving the inverse problem of X-ray photoelectron spectroscopy (XPS) by incorporating an XPS simulator, Simulation of Electron Spectra for Surface Analysis (SESSA), into Bayesian estimation to obtain an overall picture of the distribution of plausible sample structures from the measured XPS data. The Bayesian estimation framework automated the very tedious task of
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Quantitative mapping of calcium cell reservoirs in cyanobacteria at the submicrometer scale J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-07-05 Benzerara Karim, Görgen Sigrid, Khan Monis Athar, Chauvat Franck, March Katia, Menguy Nicolas, Mehta Neha, Skouri-Panet Fériel, Swaraj Sufal, Travert Cynthia, Cassier-Chauvat Corinne, Duprat Elodie
Calcium plays an important role in the physiology of bacterial cells and as a free soluble form inside the cells, it is tightly regulated at a low concentration. However, much higher amounts of stored calcium exist within cells and can be remobilized at diverse occasions. As a consequence, there has been a variety of techniques developed to quantitatively map the different forms of Ca in cells. Here
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Theoretical study of elastic electron scattering by zinc atoms in the framework of relativistic optical potential model J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-28 Vladimir I. Kelemen, Sándor Demes, Eugene Yu. Remeta
A theoretical study of integral and differential cross sections as well as of spin-polarization effects is reported for elastic electron scattering by zinc atoms at collision energies up to 3 keV. It has been shown that a P-wave shape resonance appears in the low-energy range of the integral cross sections. Its energy is about 0.19 and 0.20 eV, while its width is about 0.309 and 0.356 eV for the j = 3/2
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Analysis of X-ray images and spectra (aXis2000): A toolkit for the analysis of X-ray spectromicroscopy data J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-24 Adam P. Hitchcock
Spectromicroscopy refers to analytical methods that combine imaging and spectroscopy to provide detailed, spatially resolved analytical information about a sample, such as the type and quantitative spatial distributions of chemical components, geometric or magnetic alignment information, crystal structure, etc. The analysis of X-ray images and spectra (aXis2000) software described in this work provides
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When microscopy meets soft X-ray at TLS and TPS J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-27 Hung-Wei Shiu, Tzu-Hung Chuang, Cheng-Maw Cheng, Chia-Hao Chen, Yao-Jane Hsu, Der-Hsin Wei
Microscopy using the soft X-ray as an illumination source can integrate spectroscopy into images. This capability was implemented at Taiwan Light Source (TLS) in the early 2000s through two photoelectron-based microscopy stations whose imaging optics is either zone-plate (TLS 09A1) or electron lens (TLS 05B2). The microscopy project was later expanded into multiple stations and beamlines at Taiwan
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Operando photoelectron spectromicroscopy of nanodevices: Correlating the surface chemistry and transport in SnO2 nanowire chemiresistors J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-29 Andrei Kolmakov, J. Trey Diulus, Kurt D. Benkstein, Steve Semancik, Majid Kazemian, Matteo Amati, Maya Kiskinova, Luca Gregoratti
With size reduction of active elements in microelectronics to tens of nanometers and below, the effect of surface and interface properties on overall device performance becomes crucial. High resolution spectroscopic and imaging techniques provide a metrological route for characterization of these properties relevant to device diagnostics and failure analysis. With its roughly 100 nm spatial resolution
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DFT computation of the photoemission spectra of acrylamide vapor J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-15 Delano P. Chong
Synchrontron radiation enabled recent measurement of the complete photoemission spectrum of acrylamide reported by Evangelisti et al. in Photochem. 2 (2022) 463. It seems to be a pity that calculation with the usually reliable ab initio method SAC-CI did not produce good agreement with experiment. In the present study, we use density functional theory methods in order to improve the agreement between
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Developments in sample environment for a scanning transmission X-ray microscope at UVSOR-III synchrotron J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-15 Takuji Ohigashi, Nobuhiro Kosugi
The beamline, BL4U, in UVSOR-III Synchrotron is dedicated to scanning transmission X-ray microscopy (STXM) based on 2-dimensional soft X-ray absorption and has been in operation since 2013, to enable both academic and industrial users to carry out advanced chemical analysis under various sample environments. In this paper, we have summarized our major developments for the last decade; especially, expansion
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On the use of Soft X-ray STXM for Organic-Inorganic Halide Perovskite Photovoltaic Materials J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-15 Haeyeon Jun, Chloé Dindault, Denis Tondelier, Bernard Geffroy, Ileana Florea, Jean-Eric Bouree, Philip Schulz, Yvan Bonnassieux, Sufal Swaraj
Metal-halide perovskites are complex materials with outstanding optoelectronic properties. Thus it is of interest to analyze these materials by using every available research tool. Synchrotron tools have played an important role in fundamental and applied research for decades. Many synchrotron-based hard X-ray tools are already providing effective feedback to the perovskite solar cell (PSC) research
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ANTARES: Space-resolved electronic structure J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-20 J. Avila, S. Lorcy, P. Dudin
The spatially resolved ARPES (nanoARPES) is a development of conventional ARPES technique achieved with the focusing of light on the sample into the spot with submicron sizes. This development is used in research of essentially small samples, for example, heterostructures build of flakes of 2D materials, micro-crystals or polycrystalline samples, different crystal termination, domains in electronic
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magnetoARPES: Angle Resolved Photoemission Spectroscopy with magnetic field control J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-17 Sae Hee Ryu, Garett Reichenbach, Chris M. Jozwiak, Aaron Bostwick, Peter Richter, Thomas Seyller, Eli Rotenberg
Angle-Resolved Photoemission Spectroscopy (ARPES) is a premier technique for understanding the electronic excitations in conductive, crystalline matter, in which the induced photocurrent is collected and dispersed in energy and angle of emission to reveal the energy- and momentum-dependent single particle spectral function A(k,ω). So far, ARPES in a magnetic field has been precluded due to the need
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A library of calcium mineral reference spectra recorded by parallel imaging using NEXAFS spectromicroscopy J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-17 Mette H. Rasmussen, Cherno Jaye, Daniel Fischer, Tobias Weidner
Calcium minerals are ubiquitous in geology and life chemistry. Understanding the phase and chemical state of calcium minerals is important for numerous processes including materials chemistry, hard tissue biogenesis and geological processes. Photoemission spectroscopies such as near edge X-ray absorption fine structure (NEXAFS) and scanning transmission X-ray microscopy have been instrumental in identifying
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Illuminating the brain: Revealing brain biochemistry with synchrotron X-ray spectromicroscopy J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-16 James Everett, Jake Brooks, Frederik Lermyte, Vindy Tjendana Tjhin, Ian Hands-Portman, Emily Hill, Joanna F. Collingwood, Neil D. Telling
The synchrotron x-ray spectromicroscopy technique Scanning Transmission X-ray Microscopy (STXM) offers a powerful means to examine the underlying biochemistry of biological systems, owing to its combined chemical sensitivity and nanoscale spatial resolution. Here we introduce and demonstrate methodology for the use of STXM to examine the biochemistry of the human brain. We then discuss how this approach
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Soft X-ray scanning transmission microscopy as a selective probe of topical dermal drug delivery: The role of petrolatum and occlusion J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-05 Gregor Germer, Takuji Ohigashi, Hayato Yuzawa, Nobuhiro Kosugi, Roman Flesch, Fiorenza Rancan, Annika Vogt, Eckart Rühl
Selective and label-free probing of drugs by scanning transmission X-ray microscopy (STXM) is applied along with hyperspectral imaging to probe topically applied drugs in human skin explants ex vivo. A comparison of data evaluation strategies is reported, which includes changes in optical density at selected photon energies in the O 1 s regime, linear combination modeling using reference spectra, as
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Energy material analysis via in-situ/operando scanning transmission x-ray microscopy: A review J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-09 Juwon Kim, Danwon Lee, Chihyun Nam, Jinkyu Chung, Bonho Koo, Namdong Kim, Jongwoo Lim
The development of advanced energy systems is essential for replacing fossil fuel-based societies, and progress in the fundamental understanding of solid-state energy materials has revolutionized this field. In particular, investigating the inhomogeneity of reactions in energy systems requires analysis at the level of individual particles, which are the smallest units in the system. Synchrotron-based
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Nanoscale spectromicroscopy with the full-field X-ray microscope at the BESSY II electron storage ring in the soft and tender X-ray range J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-05 Peter Guttmann, Carla Bittencourt, Stephan Werner, Stefan Rehbein, Christoph Pratsch, Gerd Schneider
In this paper, we give an overview of the nanoscale spectromicroscopy studies performed with the full-field X-ray microscope at the BESSY II electron storage ring. We do not consider spectromicroscopy studies performed with X-ray microscopes operated at other synchrotron sources. Such studies can be found in the literature. To our knowledge, the full-field X-ray microscope at the BESSY II storage ring
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Visualization of air-induced oxidation in single crystalline LiFe0.6Mn0.4PO4 nanowires with carbon sheath using soft X-ray spectromicroscopy J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-08 Wenxiong Zhang, Eiji Hosono, Daisuke Asakura, Hayato Yuzawa, Takuji Ohigashi, Masaki Kobayashi, Hisao Kiuchi, Yoshihisa Harada
Single crystalline LiFe0.6Mn0.4PO4 (LFMP) nanowires with carbon sheath were analyzed by scanning transmission X-ray microscopy (STXM) with a spatial resolution of around 130 nm. The pinpoint Fe L-edge X-ray absorption spectroscopy (XAS) spectra in the STXM images revealed the natural oxidation of Fe2+ to Fe3+ near the tip of the nanowire by air exposure. The pinpoint O K-edge XAS spectra simultaneously
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Theoretical spectral function of CH3NH3PbI3 hybrid perovskite around the Fermi level J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-08 Min-I Lee, S. Ayaz Khan, J. Minar, A. Tejeda
Methylammonium lead iodide CH3NH3PbI3 (MAPI) is one of the hybrid organic–inorganic perovskites (HOIPs) widely considered for photovoltaic devices. Since photoemission is possibly the best technique for the experimental determination of the bands, we have calculated photoemission spectra at the main photon energies available at conventional laboratories (He I - 21.2 eV, He II - 40.8 eV) by performing
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Analysis of surface properties of Mg doped ZnS and ZnSe thin films through x-ray photoelectron spectroscopy J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-02 V.S. Ganesha Krishna, M.G. Mahesha
The surface properties of the spray-deposited Mg-doped ZnS and ZnSe films were investigated using X-ray photoelectron spectroscopy (XPS). The energy levels of the core electrons in ZnMgS and ZnMgSe, their peak positions, area ratios, and full width at half maximum were determined. Chemical shifts in Auger peaks, which are highly sensitive to changes in the chemical environment were used in the analysis
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The CARNAÚBA X-ray nanospectroscopy beamline at the Sirius-LNLS synchrotron light source: Developments, commissioning, and first science at the TARUMÃ station J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-07 Hélio C.N. Tolentino, Renan R. Geraldes, Francisco M.C. da Silva, Maria Gabriella D. Guaita, Carolina M. Camarda, Rodrigo Szostak, Itamar T. Neckel, Verônica C. Teixeira, Dean Hesterberg, Carlos A. Pérez, Douglas Galante, Flavia Callefo, Antonio C.P. Neto, Leonardo M. Kofukuda, Anna P.S. Sotero, Gabriel B.Z.L. Moreno, Sérgio A.L. Luiz, Cassiano S.N.C. Bueno, Francesco R. Lena, Harry Westfahl
We review the main developments and first commissioning experiments at the CARNAÚBA X-ray nanoprobe beamline, recently installed at the brand-new Sirius 4th-generation synchrotron radiation source at the Brazilian Synchrotron Light Laboratory (LNLS). The paper briefly discusses the X-ray nanoprobe instrument, emphasizing the first deployed experimental station TARUMÃ, and showcases preliminary results
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N, O and F K-edges XAS and DFT combination for the exploration of linkage isomers of coordinated nitric oxide in a ruthenium nitrosyl complex J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-02 Artem Mikhailov, Tatyana Asanova, Igor Asanov, Igor Píš, Elena Magnano, Gennadiy Kostin, Dominik Schaniel
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Preface J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-06-01 Hiroshi Daimon, Michel A. van Hove
Abstract not available
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Search for the interatomic Auger effect in Nitrous Oxide J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-05-18 M. Mailhiot, Y. Hikosaka, K. Jänkälä, A. Kivimäki, C. Küstner-Wetekam, J. Palaudoux, E. Pelimanni, F. Penent, C. Zindel, M. Patanen, P. Lablanquie, M. Huttula, A. Hans
The interatomic Auger effect following O 1s ionization in N2O has been experimentally investigated using multi-electron coincidence spectroscopy. The expected transition energies have been established by comparison to the measured N 1s−1v−1 core-valence double ionization energies. We describe a procedure to eliminate the background of two competing processes contributing spectroscopic signatures to
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Scanning photoelectron spectromicroscopy: From static to operando studies of functional materials J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-05-18 M. Amati, Toma Susi, P. Jovičević-Klug, M. Jovičević-Klug, Tomasz Kosmala, Gaetano Granozzi, Stefano Agnoli, Pengfei Yang, Yanfeng Zhang, Mattia Scardamaglia, L. Gregoratti
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Calculations of term energies, radiative transition wavelengths and Auger electron energies for resonances of F4+ J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-05-15 Chao Chen, Bing-cong Gou
In this work, the saddle-point variation combined with complex-rotation methods are used to calculate term energies, radiative transition wavelengths and Auger transition energies of the 1s2s22p2 (2S, 2P, 2D, 4P), 1s2s22p3p (2S, 2P, 2D), 1s2s2p3 (2,4S°, 2,4P°, 2,4D°), and 1s2p4 (2S, 2P, 2D, 4P) resonances for F4+. The present term energies, radiative rates, radiative transition wavelengths, Auger rates
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Scanning transmission X-ray spectromicroscopy: A nanotool to probe hematite nanorods for solar water splitting J. Electron Spectrosc. Relat. Phenomena (IF 1.9) Pub Date : 2023-05-09 Stefan Stanescu, Dana Stanescu, Adam Hitchcock