We systematically investigated the behavior of the α-decay half-lives (Tα) for 20 isotopic chains of even–even nuclei, from 78Pt to 116Lv. Tα is calculated within the preformed cluster model. The α-core potential is determined by the double-folding model based on the M3Y-Reid nucleon–nucleon interaction. The Coulomb potential is also microscopically calculated by the folding procedure. To confirm our

In the present study, we apply an analytical scheme to acquire wave solutions of a partial differential equation involving a local fractional derivative. The main idea of this scheme is to generalize the procedure of the well-known generalized exponential rational function technique. To test the method, we have considered the local fractional longitudinal wave equation in a magneto-electro-elastic

Recently, much controversy has been raised about the cosmological conundrum involving the discrepancy in the value of the Hubble constant as implied by Planck satellite observations of the CMBR in the early Universe and that deduced from other distance indicators (for instance using standard candles like supernovae, tip of the red giant branch, etc.) in the present epoch. The Planck estimate is about

Zr–Ni substituted barium hexaferrites with chemical compositions Ba2Co2Fe28-2xZrxNixO46 (x = 0.0, 0.25, 0.50, 0.75, 1.0) are fabricated through sol–gel autocombustion approach. The composites characteristics before and after substitution are examined through X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), vibrating sample magnetometery (VSM)

Thermal effects have been studied in phenomena of wave transportation from a loss-free isotropic cylindrical metallic waveguide to a semi-bounded warm plasma waveguide. The considered configuration consists of two semi-bounded waveguides which connected to each other. The first part is a dielectric waveguide with loss-free metallic wall and the second part is a cylindrical dielectric waveguide where

We study the scattering of electrons and positrons by argon and krypton atoms considering a generalized uncertainty principle (GUP). To proceed, we first prove the modified non-relativistic wave equation due to the minimal length in the GUP framework and then determine the wave function of incident particles applying a scattering potential including the static and the energy-dependent correlation–polarization

The optical solitons are extracted with Chen–Lee–Liu (CLL) equation that is considered with group velocity dispersion. The CLL equation describes the propagation of optical pulses in monomode fibers. In this article, the variety of solitons like dark, singular, dark-singular, bright-dark and periodic solutions are obtained by the mean of Fan-extended sub equation method under different constraint conditions

In this paper, a multi-stable chaotic hyperjerk system with both self-excited and hidden attractors is proposed. Such a system is infrequent between dynamical systems. State-space, bifurcation, and Lyapunov exponent plots are presented to show the existence of chaotic dynamics. The fractional-order model of the system and its dynamical properties are studied in this paper.

Thermodynamic properties of five diatomic molecules such as H2, HF, I2, N2 and O2 have been theoretically predicted. To this end, the interaction potential of the diatomic molecules has been considered as the Tietz–Hua (TH) potential model. Then, the Schrödinger equation was solved for the potential and energy eigenvalues were obtained in the closed form by using the Nikiforov–Uvanov (NU) method. Using

The concept of magnetohydrodynamic nonlinear mixed convective nanoliquid flow over a vertical rough cone finds applications in science and engineering fields, especially in aerospace and thermal engineering as well as in other designing and manufacturing processes. In the present investigation, the cone surface roughness, which arises during the manufacturing processes, is modelled using sine wave

The current paper explains the kinetic variables of crystallization kinetics. Se82−xTe18Gex (0 ≤ x ≤ 12) amorphous glassy materials were synthesized by the melt quench technique. XRD, SEM, and EDX characterizations were done to analyze the structure and elemental composition of the prepared amorphous glassy alloys. DSC measurements were taken to study the phase transition of the amorphous glassy alloys

In this paper, we have investigated a spatially homogeneous and isotropic quintessence Universe in Lyra geometry that fits good with latest observations. We consider that the current Universe is filled with the binary mixture of dust and dark energy. We observe that there is a signature flipping from early decelerating to the present accelerating phase due to the appearance of dark energy which is

Temperature is considerably an important and commonly used parameter to study characteristics of matter formed during high-energy nuclear collisions. Experimental data from JINR and UrQMD (latest code 3.3p2) models’ simulations have been used to estimate the temperature and other properties of negative pions in collisions of deuteron with carbon nuclei at an incident momentum of 4.2 GeV/c. Transverse

We have made an attempt to parameterize decay energies (Q) during the cluster emissions such as 4He, 6Li, 9Be,20,22Ne, 23Na, 24−26 Mg, 27Al, 28−30Si, 32−34S, 35Cl, 36,38,40Ar, 39,41 K and 40,42–44,46Ca from the superheavy nuclei 103 < Z < 126. We have formulated an empirical formula for decay energies of superheavy nuclei during the emission of different clusters of nuclei. To check the predictive

Plasma technology is promising method in wastewater management. In the present work, plasma corona discharge was used to degrade batik wastewater that contained synthetic dyes such as naphthol and procion. The plasma corona discharge was generated by a high voltage alternating current of 3.07–11.5 kV through a pair of stainless-steel electrodes with a tip radius of 2 ± 0.5 mm. The electrodes were separated

The time evolution of the thermally activated decay rates is considered. This evolution is of particular importance for the recent nanoscale experiments discussed in the literature, where the potential barrier is relatively low (or the temperature is relatively high). The single-molecule pulling is one example of such experiments. The decay process is modeled in the present work through computer solving

In the present work, the bulk nuclear properties and features of some of the excited states in the neutron-rich even–even 46−54Ca isotopes have been investigated. In order to identify the magicity and the existence of new magic numbers in these isotopes, the shell model and Hartree–Fock–Bogoliubov method were implemented based on Skyrme parameterizations. In particular, root-mean-square charge radius

In this paper, we have examined the Kantowski–Sachs space-time in the presence of strange quark matter with the appearance and non-appearance of strings in f(R) gravity. Here, R is the Ricci scalar of the space-time. Exact solutions of the field equations are obtained by considering the following conditions (i) hybrid scale factor, (ii) the proportionality of shear scalar (\(\sigma\)) with expansion

This article deals with thermal diffusion vibration analysis in an unbounded medium including a spherical cavity. Multi single/dual-phase-lag models based upon the Green–Naghdi theory are obtained to discuss the thermoelastic diffusion of the spherical cavity. The surface of the cavity is traction and chemical potential free, not isolated, and subjected to a flux varying harmonically with time. A comparison

The physical properties including thermodynamic and optical properties, electronic charge density, Fermi surface, Mulliken bond overlap population and Vickers hardness of newly synthesized MAX phase Hf2AlC and predicted Hf2AlN phase have been explored using density functional theory for the first time. We revisit lattice and elastic constants, band structure and density of states to weigh the reliability

The aim of this article is to analyze the mixed convective Ostwald–de Waele power-law nanofluid flow over vertical frustum of a cone in a non-Darcy porous medium using an efficient numerical technique. The involved power-law nanofluid model utilizes water as the base fluid, and Ti-alloy (Ti6Al4V) and multi-wall carbon nanotubes (MWCNTs) as the nanoparticles. The solution of resultant non-similarity

Intercalation of transition metal dichalcogenides (TMDs) by 3d or 4d transition metal elements are of considerable interest as the intercalated atoms can finely tune the physical and chemical properties of host TMDs. On addition, these intercalation complexes show interesting magnetic property and displays anomalous transport behavior at the magnetic ordering temperature. Here, we have synthesized

The statistical complexity and its constituent information measures of Shannon information entropy and disequilibrium for HCl and H\(_2\) molecules under q-deformed Morse potential are reported in the position and momentum space. A strong dependence of the statistical complexity on the potential deformation parameter q is established.

Second law analysis of magnetic nanofluid flow through a permeable tank with wavy inner surface is scrutinized in this work. Mathematical formulation is based on the basic formulas of thermodynamics and fluid dynamics theories. The developed equations are re-structured by the involvement of new variables. CVFEM is utilized to display the exergy loss and entropy generation for various Hartmann (Ha)

An n+ pocket-doped silicon on insulator (SOI) tunnel field effect transistor (TFET) along with a dielectric pocket (DP) at channel drain junction has been proposed and investigated in this article. The merged impact of both lateral and vertical tunneling due to n+ pocket in the gate–source overlap region enhances the ON current and provides steeper subthreshold swing (SS). The dielectric pocket at

In the present work, Cu-doped indium sulfide thin films (In2S3:Cu) have been produced by chemical bath deposition (CBD) method on the glass substrates. The deposited films have been post-annealed at 300 °C temperature for about one hour. The morphological properties of produced thin films have been investigated analytically before and after the Cu doping process. To this end, the atomic force microscopy

Conservation of magnetic flux is associated with regions of the powerful magnetic fields (B ∽ 1013 G) near neutron stars' surface. The vector potential generated by moving electric charge Q is uniformly distributed within a Neutron star's surface (radius R). The evolution of the magnetic field of isolated neutron stars is studied and based on magnetic flux conservation; the multipolar magnetic fields

In this paper, we specialize the governing equations of microstructured flexoelectric solids in a plane and solve for possible plane wave propagation. It is shown that there exist two plane waves, namely quasi-P and quasi-SV waves, in a microstructured flexoelectric solid half-space. A numerical example is considered to plot the speeds of quasi-P and quasi-SV waves against the wave number for given

Half-metallic Heusler alloys are promising materials that present the character to remain essential for spintronics applications. In this paper, we carried out a DFT spin-polarized calculation to accurately predict structural, electronic, and magnetic properties of two new quaternary Heusler alloys; namely, the PdCoMnGa and PdCoMnAl. To this aim, we have used the generalized gradient approximation

The bound and scattering states of relativistic spinless particles with screened Kratzer potential were investigated using the modified factorization method. We employed the Greene–Aldrich approximation scheme and a coordinate transformation to obtain the approximate bound state energy eigenvalues in terms of the hypergeometric function, bound state eigenfunction, scattering state energy relation and

In this paper, phase transition in SrZrO3 under high pressure has been investigated computationally using first principles calculation with ultra-soft pseudo-potential and generalized gradient approximation suggested by Perdew, Burke, and Ernzerhof correlation functional. The point where the enthalpy vs pressure curves of cubic and orthorhombic phases coincide is observed for the evaluation of phase

A detailed optical and infrared photometric analysis of the open star cluster IC 361 is given in the present paper. On studying the radial density profile, radial extent of the cluster is found to be \(8.0\pm 0.5\) arcmin. The basic physical parameters of the cluster such as \(E(B-V) = 0.56\pm 0.10\) mag, \(E(V-K)=1.72\pm0.12\) mag, \(\hbox {log(Age)}=9.10\pm 0.05\), and \((m-M)_{0} = 12.54\pm 0.05\)

In this paper, we propose a new semi-classical mechanism for the gravitational lensing of emitted light in order to investigate the evidence claiming that the general relativistic curvature interpretation of gravity is a mathematical tool to predict the physical phenomena correctly, rather than a physical phenomenon itself. Although it seems impossible for a mass-less object such as light to undergo

In this paper, we get the time evolution equations of the curvature and the torsion of a space-like curve in the three-dimensional Minkowski space. Also, we give inextensible evolutions of a time-like ruled surface that is produced by a time-like normal vector and a space-like binormal vector of a space-like curve and derive the necessary conditions for an inelastic surface evolution. As a result,

The nonlinear coupling of high-frequency upper-hybrid (UH) pump waves with low-frequency lower-hybrid (LH) waves is studied in a degenerate magnetoplasma, comprising of quantum electrons and classical ions. For this purpose, the framework of quantum hydrodynamic model is utilized to examine the Fermi pressure effects on the nonlinear dispersion relations of UH and LH waves with quantum settings. Furthermore

LiMnPO4 and LiMn0.9Mg0.1PO4 nanostructures were synthesized by a rapid microwave-assisted solvothermal method. Powder X-ray diffraction (XRD) studies confirmed the orthorhombic crystal structure of LiMnPO4 and LiMn0.9Mg0.1PO4 nanostructures. It is also noticed that the Mg2+ ions doping into manganese sites did not affect the crystal structure of LiMnPO4. The scanning electron microscope (SEM) micrographs

We investigate the tuning of the electronic properties of pentagonal PdSe2 monolayer by applying external strain. We find that the electronic structure of PdSe2 monolayer can be flexibly modulated by applying the uniaxial as well as biaxial strains. Under the tensile strain (uniaxial or biaxial), the bandgap remains indirect with CBM at M point and VBM at a k-point along the \(\varGamma \)-X path.

Utilizing Boltzmann transport equations, structural, electronic, elastic, and thermoelectric properties, as well as thermodynamic stability of RhVSi and CoVSi half-Heusler compounds were investigated using the first-principle calculations in the framework of the density functional theory. The results of structural and elastic calculations and the thermodynamic phase diagrams indicate that these compounds

The exact static accelerating solutions of Einstein’s equations in the non-comoving pure radiation fields, with an indefinite non-degenerate stationary metric in cylindrical coordinates, are obtained. The considered space-time is of Petrov type I and is not conformally flat. Moreover, the classical symmetry method is used for symmetry reduction and finding the solutions in terms of hyperbolic functions

The structural and electronic properties of Cd1−xZnxTe and Cd1–xMnxTe compound semiconductors are investigated by using the first-principles pseudopotential plane-wave method based on the density functional theory (DFT). The generalized gradient approximation (GGA) and the local density approximation (LDA) are used. The calculated lattice parameters, the bulk modulus and the electronic band structures

The structural, electronic and thermodynamic properties of LaRuX (X = Si, Ge) compounds are investigated using density functional theory by the Wien2k code. Using the first-principles procedure, the Hubbard parameter of La 5d electrons and Ru 4d electrons of LaRuX (X = Si, Ge) compounds is calculated. In these calculations, the exchange–correlation potential is calculated using the generalized gradient

The modified embedded atom method (MEAM) potentials of Jin et al. (Appl Phys A 120:189, 2015) are reparameterized through fitting the available experimental data and ab initio results of several physical properties better for seven face-centered cubic metals, Ag, Al, Au, Cu, Ni, Pd, and Pt. Results for the structure stabilities, point defects, and phonon dispersion properties are in better agreement

The magnetic properties and ferrimagnetic hysteresis loop of azulene-like nano-structure have been investigated via Monte Carlo simulations. The ground state phase diagrams of azulene-like nano-structure with half and integer mixed spins (3;3/2) are found. The multiphase points, disordered regions and various structures are presented. Ground state phase diagrams are useful for checking the reliability

The current paper is concerned with extracting a novel law for a varying polynomial deceleration parameter. This law covers each of Berman’s laws, a linearly varying deceleration parameter, a periodic Universe with a varying deceleration parameter of the second degree, and many other models. Additionally, this novel law tells us about the behavior of the Universe. Furthermore, it gives appropriate

The present study deals with fabrication of polyaniline-passivated n-type porous silicon (PS) for ammonia detection at room temperature. PS is fabricated by electrochemical etching from n-type crystalline silicon(C–Si). Polyaniline (PANI) passivation is incorporated on PS by electrochemical polymerization of aniline. Morphological, elemental, structural and optical characterization of the heterostructure

The present study deals with the swirling flow problem for the nanoliquid over a radially stretchable rotating disk with the consideration of nonlinear mixed convection and chemical reaction defined by Arrhenius model. The surface of the stretchable rotating disk concedes with the Navier’s velocity slip condition. The temperature jump condition due to imperfect liquid–solid energy interaction is also

There is a crucial necessity for enhancing the efficiency of the solution of problem describing the non-Newtonian fluid flow over a stretching sheet to improve proficient the mechanism of heat transfer in numerous practical applications. For this aim, an efficient spectral collocation method is implemented in this paper to present the numerical solution for the flow and heat transfer of a non-Newtonian

In this work, the static and dynamic fluorescence analyses of direct yellow 27 [C25H20Na2O9S3] had been carried out through fluorescence spectroscopic techniques in various polar protic and polar aprotic solvents at room temperature. The prominent emission peak of the molecule observed at 355.84 nm in water, and the Stokes shift of the order of 68.84 nm (Δν = 6741 cm−1) came out. We found the recorded

In the present paper, we investigated the neutron skin properties, central depletion effects, residual and average neutron–proton interactions for Co in a Type II Supernova 1987A. The neutron skin thicknesses performed by Skyrme–Hartree–Fock model for the isotopic chain of Co \((17\le N\le 82)\) are obtained with different methods to investigate the bulk and surface contributions to neutron skin thicknesses

Temperature-dependent ionic parameters and solid-state polymer battery studies of a newly synthesized sodium-ion-conducting solid polymer electrolytes (SPEs): (1 − x) PEO: x NaCl, where 0 ≤ x ≤ 50 in wt%, are reported. The present SPEs are synthesized by a recently developed hot-press/dry technique in place of traditional solution-cast method. The room temperature conductivity (σ) of the optimum conducting

Fractional telegraph equation is introduced to promote a sub-diffusive transport model of the neutrons inside a nuclear reactor. Here, the time derivatives of the classical telegraph equation have been replaced by the Caputo fractional derivative. In this paper, the fractional solutions are obtained through a technique that relies heavily on Fourier and Laplace transformations and is given in terms

Good quality single crystals of L-valine copper chloride were grown by slow evaporation solution growth technique with different concentrations (0.25, 0.50, 0.75 and 1.0 mol). Single-crystal X-ray diffraction technique reveals that the grown single crystals were crystallized in the monoclinic structure. Kurtz powder technique was used to test the nonlinear optical (NLO) activity of the samples which

The current paper is concerned with the nonlinear stability analysis of rotating magnetic fluid columns. The rotation sources are a mixture of both uniform and oscillating behavior. The motivation behind tackling this topic is the increasing interest in atmospheric and oceanic motions. The system consists of two magnetic phase fluid that fills two infinite vertical cylinders. An azimuthal uniform magnetic

The stochastic resonance (SR) phenomenon for an underdamped monostable system with multiplicative and additive noise is investigated. The expression for the stationary probability density is obtained under the condition of the detailed balance and weak noise. The signal-to-noise ratio (SNR) for the monostable system is derived based on two-state theory. The result shows that the SR phenomenon can be

The study explores the particle dynamics, asymptotic behavior, and flatness in Riemann curvature corresponding to the solutions obtained from the Ricci tensor of cylindrical spacetimes. Since these solutions are non-Minkowskian and are proposed to have curvature in almost all the cases, that is why some cylindrically symmetric static vacuum solutions of Einstein Field Equations have been worked out

In this paper, the approaches adopted for the extraction of earthquake-induced features from ionospheric irregularities like spread F and sporadic E are discussed. For this purpose, a few Japan earthquakes (EQ) with magnitude M > 7 are selected. The selection procedures for identifying earthquake-induced effects in these irregularity parameters are discussed, and the EQ time signature in these irregularities

In this study, the sol–gel spin-coating method was used to produce pure CdO and 0.1% Li-doped CdO thin films. The main purpose of the study was to investigate the influence of the Li-doping ratio on the photoresponse of CdO thin film. Within this scope, pure CdO and Li-doped CdO chemical solutions were prepared and then deposited onto p-Si wafer and microscope glass as a thin film. Then, the surface

The paper deals with the study of anisotropic dark energy and massive scalar field in the evolution of spatially homogeneous Bianchi type-\(\hbox {VI}_{0}\) cosmological model in the framework of Lyra geometry. Exact solution of Einstein’s field equations is obtained by using two supplementary physical and mathematical conditions which correspond to an anisotropic dark energy cosmological model for

To evaluate the alloying effect on Al–Li alloy, we conduct a theoretical exploration to predict the behaviors of Sc and Cu segregation to Al/δ′ interface. The results show that Sc tends to segregation at Al3Li layer by substituting Li atom, while Cu prefers to replace Al atom of Al layer at the interface. The improvement of interface strength caused by segregated Sc and Cu is similar. The analysis