当前位置: X-MOL 学术J. Synchrotron Radiat. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Temperature‐gradient analyzers for non‐resonant inelastic X‐ray scattering
Journal of Synchrotron Radiation ( IF 2.4 ) Pub Date : 2021-03-19 , DOI: 10.1107/s160057752100179x
Daisuke Ishikawa , Alfred Q. R. Baron

The detailed fabrication and performance of the temperature‐gradient analyzers that were simulated by Ishikawa & Baron [(2010). J. Synchrotron Rad.17, 12–24] are described and extended to include both quadratic and 2D gradients. The application of a temperature gradient compensates for geometric contributions to the energy resolution while allowing collection of a large solid angle, ∼50 mrad × 50 mrad, of scattered radiation. In particular, when operating relatively close to backscattering, π/2 − gθB = 1.58 mrad, the application of a gradient of 1.32 K per 80 mm improves the measured total resolution from 60 to 25 meV at the full width at half‐maximum, while when operating further from backscattering, π/2 − gθB = 6.56 mrad, improvement from 330 to 32 meV is observed using a combination of a gradient of 6.2 K per 80 mm and dispersion compensation with a position‐sensitive detector. In both cases, the operating energy was 15.8 keV and the incident bandwidth was 22 meV. Notably, the use of a temperature gradient allows a relatively large clearance at the sample, permitting installation of more complicated sample environments.

中文翻译:

用于非共振非弹性X射线散射的温度梯度分析仪

由Ishikawa&Baron [(2010)模拟的温度梯度分析仪的详细制造和性能。J.同步加速器辐射 [ 17,12–24]被描述并扩展为包括二次和2D梯度。温度梯度的应用补偿了能量分辨率的几何贡献,同时允许收集大的立体角(约50 mrad×50 mrad)的散射辐射。特别是,相对靠近背散射操作时,π/ 2 - Gθ= 1.58毫弧度,每80 1.32ķ毫米的梯度的应用改善了在一半最大值处测得的总分辨率为60〜25兆电子伏的全宽,而从反向散射进一步操作时,π/ 2 - Gθ= 6.56 mrad,结合使用每80 mm 6.2 K的梯度和位置敏感检测器的色散补偿,可以观察到从330 meV改善到32 meV。在这两种情况下,工作能量均为15.8 keV,入射带宽为22 meV。值得注意的是,温度梯度的使用允许在样品处具有相对较大的间隙,从而允许安装更复杂的样品环境。
更新日期:2021-05-06
down
wechat
bug