# Predissociation of the N+2(C 2Σ+u) state observed via C 2Σ+u → X 2Σ+g fluorescence after resonant 1s−1π* excitation of N2 molecule

Ehresmann A, Werner L, Klumpp S, Demekhin P, Lemeshko M, Sukhorukov V, Schartner K, Schmoranzer H. 2006. Predissociation of the N+2(C 2Σ+u) state observed via C 2Σ+u → X 2Σ+g fluorescence after resonant 1s−1π* excitation of N2 molecule. Journal of Physics B: Atomic, Molecular and Optical Physics. 39(6), L119–L126.

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Author

Ehresmann, Arno;
Werner, Lutz;
Klumpp, Stefan;
Demekhin, Ph V;
Lemeshko, Mikhail

^{IST Austria}^{}; Sukhorukov, V. L; Schartner, Karl H; Schmoranzer, Hans PAbstract

Predissociation of the N+2 C 2Σ+u(v') vibrational levels with v' ≥ 3 was observed via dispersed C 2Σ+u → X 2Σ+g fluorescence in the spectral range of 165–208 nm after resonant 1s−1π*(vr) excitation of N2 and its subsequent autoionization into the N+2 C state. This range is dominated by lines in atomic nitrogen, by overlapped C 2Σ+u(v') → X 2Σ+g(v'') vibrational band sequences with Δv = const and broad unresolved band systems (D, (2))2Πg(v') → A2Πu(v'') in the N+2 molecular ion. With very high fluorescence resolution of about 0.1 nm FWHM individual C 2Σ+u(v') → X 2Σ+g(v'') vibrational bands have been resolved. Calculation of the observed fluorescence spectra by taking into account predissociation and molecular rotation describes well the shape of both individual vibrational bands C 2Σ+u(v') → X 2Σ+g(v'') and the whole band system.

Publishing Year

Date Published

2006-03-28

Journal Title

Journal of Physics B: Atomic, Molecular and Optical Physics

Acknowledgement

This work has been supported by the Deutsche Forschungsgemeinschaft (DFG) and by the Bundesministerium für Bildung und Forschung (BMBF) (Förderkennzeichen 05 ES3XBA/5 and IB/DLR RUS 02/037). The cooperation between the groups at the universities of Kaiserslautern and Rostov-on-Don was supported by the Alexander-von-Humboldt Foundation within the framework of an institute partnership with funds from BMBF

Volume

39

Issue

6

Page

L119 - L126

IST-REx-ID

### Cite this

Ehresmann A, Werner L, Klumpp S, et al. Predissociation of the N+2(C 2Σ+u) state observed via C 2Σ+u → X 2Σ+g fluorescence after resonant 1s−1π* excitation of N2 molecule.

*Journal of Physics B: Atomic, Molecular and Optical Physics*. 2006;39(6):L119-L126. doi:10.1088/0953-4075/39/6/L03Ehresmann, A., Werner, L., Klumpp, S., Demekhin, P., Lemeshko, M., Sukhorukov, V., … Schmoranzer, H. (2006). Predissociation of the N+2(C 2Σ+u) state observed via C 2Σ+u → X 2Σ+g fluorescence after resonant 1s−1π* excitation of N2 molecule.

*Journal of Physics B: Atomic, Molecular and Optical Physics*. IOP Publishing Ltd. https://doi.org/10.1088/0953-4075/39/6/L03Ehresmann, Arno, Lutz Werner, Stefan Klumpp, Ph Demekhin, Mikhail Lemeshko, V. Sukhorukov, Karl Schartner, and Hans Schmoranzer. “Predissociation of the N+2(C 2Σ+u) State Observed via C 2Σ+u → X 2Σ+g Fluorescence after Resonant 1s−1π* Excitation of N2 Molecule.”

*Journal of Physics B: Atomic, Molecular and Optical Physics*. IOP Publishing Ltd., 2006. https://doi.org/10.1088/0953-4075/39/6/L03.A. Ehresmann

*et al.*, “Predissociation of the N+2(C 2Σ+u) state observed via C 2Σ+u → X 2Σ+g fluorescence after resonant 1s−1π* excitation of N2 molecule,”*Journal of Physics B: Atomic, Molecular and Optical Physics*, vol. 39, no. 6. IOP Publishing Ltd., pp. L119–L126, 2006.Ehresmann, Arno, et al. “Predissociation of the N+2(C 2Σ+u) State Observed via C 2Σ+u → X 2Σ+g Fluorescence after Resonant 1s−1π* Excitation of N2 Molecule.”

*Journal of Physics B: Atomic, Molecular and Optical Physics*, vol. 39, no. 6, IOP Publishing Ltd., 2006, pp. L119–26, doi:10.1088/0953-4075/39/6/L03.