Document Type
Article
Publication Date
2-2000
Publication Title
Physical Review A
Publisher
American Physical Society
Volume
61
Issue
2
First page number:
022709-1
Last page number:
022709-5
Abstract
Vibrational-resolved ion and ion-pair yield spectra of N2 and CO taken at their 1s⃗π* resonance excitations reveal decay-channel-dependent core hole lifetimes. The linewidths of the yield spectra tend to be shortened when the number of electrons ejected in the deexcitation process increases, finally becoming narrower than the total ion yield or absorption natural lifetime width of the core-excited states of N2 and CO, respectively. In contrast to this, the linewidths of the yield spectra for the singly charged molecular ions, N2+ and CO+, are shown to be broader than their corresponding natural linewidths. This linewidth shortening and broadening observed in the ion yield spectra are explained by the effect of different internuclear distances on the lifetime of an excited molecular state.
Controlled Subject
Auger effect; Excited state chemistry; Nuclear excitation; Time-of-flight mass spectrometry
Disciplines
Atomic, Molecular and Optical Physics | Physical Chemistry
File Format
File Size
127 KB
Language
English
Permissions
Copyright American Physical Society. Used with permission.
Rights
IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/
Repository Citation
Saito, N.,
Hempelmann, A.,
Heiserq, F.,
Hemmers, O.,
Wieliczek, K.,
Viefhaus, J.,
Becker, U.
(2000).
Lifetime Effects on the Dissociation of Core-excited N2 and CO Molecules.
Physical Review A, 61(2),
022709-1-022709-5.
https://digitalscholarship.unlv.edu/hrc_fac_articles/33