Toward improved temporal resolution in electron coincidence experiments
作者:
P. E. Best,
Hong Zhu,
期刊:
Review of Scientific Instruments
(AIP Available online 1985)
卷期:
Volume 56,
issue 3
页码: 389-397
ISSN:0034-6748
年代: 1985
DOI:10.1063/1.1138310
出版商: AIP
数据来源: AIP
摘要:
The two major contributions to the time spread of electrons detected after energy analysis in coincidence techniques are from the angular spread in the spectrometers and energy dispersion. We describe a compensation technique for each of these contributions. To compensate for the angular spread we would couple the first hemispherical electron spectrometer with an identical one, by means of an electron lens with a magnification of −1. Compensation for the energy spread is possible because in the spectrometers faster electrons have longer transit times, while the opposite is the case for electrons in field‐free space and in electron lenses. In each case there is a linear relationship between the time spread and the spread in kinetic energies.
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