Pump-probe lifetime measurements on singlet ungerade states in molecular nitrogen

J. P. Sprengers*, A. Johansson, A. L'Huillier, C. G. Wahlström, B. R. Lewis, W. Ubachs

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)


    Excited-state lifetimes for a number of vibronic states of 1Πu symmetry in molecular nitrogen have been determined experimentally in a laser-based pump-probe scheme using a coherent and tunable extreme ultraviolet source based on harmonic generation. States investigated in 14N2 were b1Πu(v=6-9), of valence character, and c31Πu(v=1) and o 31Πu(v=1), of Rydberg character. In the case of b1Πu(v=7) and c31Π u(v=1), rotationally dependent predissociation was observed. States studied in 15N2 were b1Πu(v=5) and c31Πu(v=1); in addition, lifetimes of the c41Σu +(v=0,1) and b′1Σu +(v=1) states were determined. The lifetimes show a dependence on the vibrational quantum number and isotope.

    Original languageEnglish
    Pages (from-to)348-351
    Number of pages4
    JournalChemical Physics Letters
    Issue number4-6
    Publication statusPublished - 11 May 2004


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