期刊
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
卷 239, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.elspec.2019.146900
关键词
Time-of-flight electron spectrometer; Synchrotron radiation; Magnetic-bottle spectrometer
类别
资金
- German Research Foundation [GA 389/27-1]
- Swiss Federal Office of Energy [SI/501269-01]
Magnetic bottle time-of-flight electron spectrometers traditionally combine high detection efficiency with high energy resolution in low duty cycle, pulsed experiments. We proposed a new electron-trap design in which photoelectrons oscillate between a magnetic and an electrostatic mirror. Ideally, they accumulate in the trap for several microseconds before the electrostatic mirror is switched off. This opens up new applications at continuous or quasi-continuous light sources, such as synchrotron radiation facilities. In the original setup, we achieved high energy resolution using planar metal grids for the electrostatic mirror. However, the finite transmission of the meshes and the high oscillation frequency of electrons limit the duty cycle. In the first gridless design proposed herein, the energy resolution is lower, but the storage time exceeds 40 mu s. Thus, at an operating frequency of 100 kHz ((sic)s), 40% of all electrons emitted in 4 pi sr may be analyzed.
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