Born in weak fields: below-threshold photoelectron dynamics

Born in weak fields: below-threshold photoelectron dynamics
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诞生于弱场:低于阈值的光电子动力学

DOI:
10.1088/1361-6455/50/3/034002
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发表时间:
2017
期刊:
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子:
--
通讯作者:
R. Dörner
R. Dörner
中科院分区:
--
文献类型:
--
作者:
J. B. Williams;U. Saalmann;F. Trinter;M. S. Schöffler;M. Weller;P. Burzynski;C. Goihl;K. Henrichs;C. Janke;B. Griffin;G. Kastirke;J. Neff;M. Pitzer;M. Waitz;Y. Yang;G. Schiwietz;S. Zeller;T. Jahnke;R. Dörner

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我们研究了超低动能光电子的动力学。许多用于检测光电子的实验技术需要存在(或多或少)弱的电提取场以便执行测量。我们的研究表明,当目标系统暴露于这样的静电场时,超低能光电子在其表观测量动量中表现出特征性的偏移。已经弱到1 V cm-1的场对检测到的电子动量有可观察到的影响。这种明显的位移证明了零能量的光电子从他发射的实验,并通过理论模型计算解释。
We investigate the dynamics of ultra-low kinetic energy photoelectrons. Many experimental techniques employed for the detection of photoelectrons require the presence of (more or less) weak electric extraction fields in order to perform the measurement. Our studies show that ultra-low energy photoelectrons exhibit a characteristic shift in their apparent measured momentum when the target system is exposed to such static electric fields. Already fields as weak as 1 V cm–1 have an observable influence on the detected electron momentum. This apparent shift is demonstrated by an experiment on zero energy photoelectrons emitted from He and explained through theoretical model calculations.
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