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Journal of Chemical Physics / Volume 135 / Issue 24 / ARTICLES / Gas Phase Dynamics and Structure: Spectroscopy, Molecular Interactions, Scattering, and Photochemistry

J. Chem. Phys. 135, 244301 (2011); http://dx.doi.org/10.1063/1.3672165 (11 pages)

High-resolution Fourier-transform extreme ultraviolet photoabsorption spectroscopy of 14N15N

A. N. Heays1, G. D. Dickenson1, E. J. Salumbides1, N. de Oliveira2, D. Joyeux2, L. Nahon2, B. R. Lewis3, and W. Ubachs1

1Institute for Lasers, Life and Biophotonics Amsterdam, VU University, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
2Synchrotron Soleil, Orme des Merisiers, St. Aubin, BP 48, 91192 Gif sur Yvette Cedex, France
3Research School of Physics and Engineering, The Australian National University, Canberra, Australian Capital Territory 0200, Australia

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(Received 3 November 2011; accepted 5 December 2011; published online 22 December 2011)

The first comprehensive high-resolution photoabsorption spectrum of 14N15N has been recorded using the Fourier-transform spectrometer attached to the Desirs beamline at the Soleil synchrotron. Observations are made in the extreme ultraviolet and span 100 000–109 000 cm−1 (100–91.7 nm). The observed absorption lines have been assigned to 25 bands and reduced to a set of transition energies, f values, and linewidths. This analysis has verified the predictions of a theoretical model of N2 that simulates its photoabsorption and photodissociation cross section by solution of an isotopomer independent formulation of the coupled-channel Schrödinger equation. The mass dependence of predissociation linewidths and oscillator strengths is clearly evident and many local perturbations of transition energies, strengths, and widths within individual rotational series have been observed.

© 2011 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL PROCEDURE AND ANALYSIS
  3. CSE MODELLING
  4. RESULTS AND DISCUSSION
    1. 1 Π u states
    2. 1Σu+ states
  5. CONCLUSIONS

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KEYWORDS and PACS

Keywords

coupled cluster calculations, Fourier transform spectra, isomerism, isotope effects, molecule-photon collisions, nitrogen, oscillator strengths, photodissociation, photoexcitation, Schrodinger equation, spectral line breadth, ultraviolet spectra

PACS

  • 33.20.Lg

    Ultraviolet spectra

  • 33.70.Jg

    Line and band widths, shapes, and shifts

  • 33.70.Ca

    Oscillator and band strengths, lifetimes, transition moments, and Franck-Condon factors

  • 33.80.Gj

    Diffuse spectra; predissociation, photodissociation

  • 33.15.Hp

    Barrier heights (internal rotation, inversion, rotational isomerism, conformational dynamics)

  • 31.15.bw

    Coupled-cluster theory

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3672165

PUBLICATION DATA

ISSN

0021-9606 (print)  
1089-7690 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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