Spin and energy analyzed photoemission: a feasibility analysis.
Spin and energy analyzed photoemission: a feasibility analysis.
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自旋和能量分析光电子：可行性分析。
DOI：
10.1063/1.1135705
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
R. Celotta
中科院分区：
文献类型：
--
作者：
D. Pierce;C. Kuyatt;R. Celotta
自旋和能量分析的光电子能谱将为表面磁性的研究提供新的科学机遇。本文总结了电子光学守恒定律和相空间概念，并应用于确定由磁场中的光电发射器、光电子能量分析器和电子自旋分析器组成的实验的可行性。对于使用He I共振辐射和能量和自旋分析仪的典型参数的来自Ni晶体的光电发射的示例，计算出约220计数/s的最终信号计数率。描述了按数量级增加计数率的方法。特别是，提出了一种新的实验配置，它可以避免由磁场引起的计数率的大幅下降。
New scientific opportunities, particularly for investigation of surface magnetism, will be provided by spin and energy analyzed photoemission. Electron-optical conservation laws and phase space concepts are summarized and applied to determine the feasiblity of an experiment consisting of a photoemitter in a magnetic field, a photoelectron energy analyzer and an electron spin analyzer. For the example of photoemission from a Ni crystal using He I resonance radiation and typical parameters for the energy and spin analyzers, a final signal count rate of approximately 220 counts/s is calculated. Ways to increase the count rate by orders of magnitude are described. In particular, a new experimental configuration is suggested which may avoid the large reduction in count rate caused by the magnetic field.