(e, 2e) electron momentum spectrometer with high sensitivity and high resolution

A high sensitivity and high resolution (e, 2e) electron momentum spectrometer with simultaneous detection in energy and momentum are constructed. The design and performance of the spectrometer are reported. The orbital electron density distributions are obtained accurately and rapidly by using this...

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Bibliographic Details
Published in:Review of scientific instruments 2005-06, Vol.76 (6)
Main Authors: Ren, X. G., Ning, C. G., Deng, J. K., Zhang, S. F., Su, G. L., Huang, F., Li, G. Q.
Format: Article
Language:English
Subjects:
60 APPLIED LIFE SCIENCES
ARGON
BINDING ENERGY
CALIBRATION
COUNTING RATES
DESIGN
DETECTION
ELECTRON CORRELATION
ELECTRON DENSITY
ELECTRON SPECTROMETERS
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELECTRONS
HELIUM
IONIZATION
RESOLUTION
SENSITIVITY
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Description
Summary:A high sensitivity and high resolution (e, 2e) electron momentum spectrometer with simultaneous detection in energy and momentum are constructed. The design and performance of the spectrometer are reported. The orbital electron density distributions are obtained accurately and rapidly by using this spectrometer equipped with a double toroidal analyzer. The experimental results on argon and helium exhibit the significant improvements in coincidence count rates, resolution, sensitivity and obtainment of a wide range of adjustable experimental impact energies, which are crucial for further electron momentum spectroscopy studying electronic structure and electron correlation in complex systems.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1897668