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Threshold photoelectron spectroscopy of I2

✍ Scribed by Andrew J. Yencha; Martin C.R. Cockett; Jon G. Goode; Robert J. Donovan; Andrew Hopkirk; George C. King

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 499 KB
Volume: 229
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)01060-9

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✦ Synopsis

The threshold photoelectron spectrum of molecular iodine has been measured at a resolution of 6-8 meV using synchrotron radiation in the region 9-14 eV and a penetrating-field electron spectrometer. The spectrum reveals resolved vibrational structure in each spin-orbit component of the X ('&) state of I:, which arises as a result of both direct photoionization and autoionization processes. In addition, extensive resolved vibrational structure has been observed in the A (211,,,) state of 1: for the first time in any electron spectroscopic study. The average vibrational spacings were as follows: 220( 8) cm-' in X (*I&), 214(8) cm-' in X (*n g,l,z), and 120(S) cm-' averaged over both spin-orbit components in A ('II,,,).

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