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Selective excitation of the np sigma(1)Sigma(+)(u) and np pi(1)Pi(u) to E,F (1)Sigma(+)(g) emission systems in molecular hydrogen using synchrotron radiation
KTH, Superseded Departments, Physics.
KTH, Superseded Departments, Physics.
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2004 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 388, no 03-jan, 31-35 p.Article in journal (Refereed) Published
Abstract [en]

The npsigma(1)Sigma(u)(+) and nppi(1)Pi(u) states in H-2 have been selectively excited using monoenergetic synchrotron light in the range 14.4-15.5 eV and the subsequent emission was observed using a grating spectrometer. In total 22 well separated bands of the npsigma(1)Sigma(u)(divided by) and nppi(1)Pi(u) to E,F (1)Sigma(g)(divided by) systems (n = 3-7) were observed and rotationally analysed. The intensities of the P and R branches relative to the Q branch vary strongly in the nppi to EF bands confirming the existence of predissociations of a large number of nppi(1)Pi(divided by) levels. Energy levels of the E,F (1) Sigma(g)(divided by) state (v(EF) = 0, 1, 3, 6-10) are obtained which confirm earlier determinations from other H-2 experiments.

Place, publisher, year, edition, pages
2004. Vol. 388, no 03-jan, 31-35 p.
Keyword [en]
double-minimum state, spectroscopic identification, h-2 molecule, predissociation
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-23313DOI: 10.1016/j.cplett.2004.02.060ISI: 000220727000007Scopus ID: 2-s2.0-1842473695OAI: oai:DiVA.org:kth-23313DiVA: diva2:342011
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Rachlew, Elisabeth

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