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Vibrationally Resolved O 1{ital s} Photoelectron Spectrum of CO{sub 2}: Vibronic Coupling and Dynamic Core-Hole Localization

Journal Article · · Physical Review Letters
; ; ; ; ; ;  [1]
  1. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany)

The C and O 1s photoelectron lines of the CO{sub 2} molecule in the gas phase have been measured with vibrational resolution in the threshold region. The vibrational fine structure on the O 1s line is completely dominated by the antisymmetric stretching mode with a frequency of 307({plus_minus}3)meV . This mode can be excited only via vibronic coupling, as predicted by Domcke and Cederbaum [Chem.Phys.{bold 25}, 189 (1977)], and provides a mechanism for dynamic core-hole localization. Relaxation effects are found to affect strongly the vibrational intensity distribution of the photoelectron line. {copyright} {ital 1997} {ital The American Physical Society}

Research Organization:
Brookhaven National Laboratory
DOE Contract Number:
AC02-76CH00016
OSTI ID:
548830
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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