標題: He I Ultraviolet Photoelectron Spectroscopy of Benzene and Pyridine in Supersonic Molecular Beams Using Photoelectron Imaging
作者: Liu, Suet-Yi
Alnama, Koutayba
Matsumoto, Jun
Nishizawa, Kiyoshi
Kohguchi, Hiroshi
Lee, Yuan-Pern
Suzuki, Toshinori
應用化學系
Department of Applied Chemistry
公開日期: 14-Apr-2011
摘要: We performed He I ultraviolet photoelectron spectroscopy (UPS) of jet-cooled aromatic molecules using a newly developed photoelectron imaging (PEI) spectrometer. The PEI spectrometer can measure photoelectron spectra and photoelectron angular distributions at a considerably higher efficiency than a conventional spectrometer that uses a hemispherical energy analyzer. One technical problem with PEI is its relatively high susceptibility to background electrons generated by scattered He I radiation. To reduce this problem, we designed a new electrostatic lens that intercepts background photoelectrons emitted from the repeller plate toward the imaging detector. An energy resolution (Delta E/E) of 0.735% at E = 5.461 eV is demonstrated with He I radiation. The energy resolution is limited by the size of the ionization region. Trajectory calculations indicate that the system is capable of achieving an energy resolution of 0.04% with a laser if the imaging resolution is not limited. Experimental results are presented for jet-cooled benzene and pyridine, and they are compared with results in the literature.
URI: http://dx.doi.org/10.1021/jp1098574
http://hdl.handle.net/11536/9000
ISSN: 1089-5639
DOI: 10.1021/jp1098574
期刊: JOURNAL OF PHYSICAL CHEMISTRY A
Volume: 115
Issue: 14
起始頁: 2953
結束頁: 2965
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