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Interference quenching of nu('')=1 vibrational line in resonant photoemission of N-2: A possibility to obtain geometrical information on the core-excited state
KTH, Superseded Departments, Biotechnology.
KTH, Superseded Departments, Biotechnology.ORCID iD: 0000-0002-1763-9383
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2002 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 89, no 10Article in journal (Refereed) Published
Abstract [en]

An interference quenching of the nu=1 vibrational line in the resonant Auger decay of N 1s-->pi(*) core-excited N-2 is observed and analyzed. The intensity ratio between the nu=1 and nu=0 vibrational levels of the X(2)Sigma(g)(+) final state shows a surprising nonmonotonous variation as a function of frequency detuning, going through a minimum with a complete suppression of nu=1. We have developed a simple model which shows a linear relation between the value of the detuning frequency for this minimum and the equilibrium bond distance R-c(0) of the core-excited state. A new way is thus established of determining the equilibrium bond distance for the core-excited state with a precision deltaR(c)(0)<10(-3) Angstrom.

Place, publisher, year, edition, pages
2002. Vol. 89, no 10
Keyword [en]
ray raman-scattering, auger-spectra, excitation, molecules, collapse, n2
URN: urn:nbn:se:kth:diva-21841DOI: 10.1103/PhysRevLett.89.103002ISI: 000177582600015OAI: diva2:340539
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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