Data scaling and temperature calibration in time-resolved photocrystallographic experiments
Data scaling and temperature calibration in time-resolved photocrystallographic experiments
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DOI：
10.1107/s0108767310029429
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发表时间：
2010-11-01
期刊：
影响因子：
--
通讯作者：
Coppens, Philip
中科院分区：
文献类型：
--
作者：
Schmokel, Mette S.;Kaminski, Radoslaw;Coppens, Philip
通过脉冲激光照射引起晶体结构变化的实验涉及由于沉积的多余能量的耗散而导致样品温度升高。当需要大量脉冲时，热量增加尤其明显，如在传统源进行的伪稳态实验中，但在同步加速器研究中，热量增加不可忽略，在同步加速器研究中，非常短的激光曝光可能就足够了。讨论了开灯和关灯数据的相对缩放以及两组之间温度差异的校正。
Experiments in which structural changes in crystals are induced by pulsed-laser exposure involve an increase in sample temperature due to the dissipation of the deposited excess energy. The heat increase is especially pronounced when a large number of pulses is needed, as in pseudo-steady-state experiments conducted at conventional sources, but not negligible in synchrotron studies in which very short laser exposures may be adequate. The relative scaling of the light-ON and light-OFF data and the correction for temperature differences between the two sets are discussed.