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Laser induced fluorescence spectra of the a 3u–X 1 + g" align="middle"/> band of Na2 are studied using the crossed molecular beam and laser technique in the wavelength region 14 700–16 000...
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Highly excited states of nitric oxide studied by two-color double resonance spectroscopy

J. Chem. Phys. 78, 1132 (1983); doi:10.1063/1.444898

Issue Date: 1 February 1983

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Takayuki Ebata, Naohiko Mikami, and Mitsuo Ito
Department of Chemistry, Faculty of Science, Tohoku University, Sendai 980, Japan
Double resonance enhanced four-photon ionization spectra and fluorescence dip spectra of nitric oxide have been simultaneously measured using two tunable dye lasers. The spectra showed clear rovibronic structure of the 2Sigma+ and 2Pi states in the third-photon region (65 000~70 000 cm−1). Laser power dependencies of the fluorescence dip and the ionization signals have been analyzed by kinetic rate equations and the absorption cross section of the transition between the second resonance state and the A 2Sigma+ state has been obtained. Finally, by varying the delay time between the pulses from the first and second dye lasers, we have observed collision induced rotational relaxation in the A 2Sigma+ state. The relaxation rate was found to be comparable to the electronic quenching rate. The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
History: Received 5 August 1982; accepted 4 November 1982
Permalink: http://link.aip.org/link/?JCPSA6/78/1132/1
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KEYWORDS and PACS

Keywords
PACS
  • 33.80.Kn
    Molecular spectra and interactions of molecules with photons Photon interactions with molecules Multiphoton processes
  • 33.80.Eh
    Molecular spectra and interactions of molecules with photons Photon interactions with molecules Autoionization, photoionization, and photodetachment
  • 33.40.-e
    Molecular spectra and interactions of molecules with photons Double resonances and other multiple resonances
  • YEAR: 1983

PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
Publisher:
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REFERENCES (17)
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  1. See, for example (a) D. H. Parker, J. O. Berg, and M. A. El-Sayed, in Advances in Laser Chemistry, edited by A. H. Zewail (Springer, Berlin, 1978), p. 320;
  2. (b) D. M. Friedrich and W. H. McClain, Annu. Rev. Phys. Chem. 31, 559 (1980);
  3. (c) P. M. Johnson and C. E. Otis, ibid. 32, 139 (1981).
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  14. In this case, 2omega2+omega1 resonances to the rotational level of J = 8(1/2) in the B2Pi1/2, nu = 25 state. The energy of this level from the ground state is 66 887.1 cm−1.
  15. Actually, except the 9(1/2) level of the L2Pi, nu-->C2Pi, nu = 6 state, other lines do not exactly resonance and deviate by 1~4 cm−1 from the three-photon energies.
  16. (a) P. Cremaschi, P. M. Johnson, and J. L. Whitten, J. Chem. Phys. 69, 4341 (1978);
    17. (b) P. Cremaschi, ibid. 75, 3944 (1981).
  17. (a) H. Okabe, Photochemistry of Small Molecules (Wiley-Interscience, New York, 1978), p. 171;
    18. (b) H. Zacharias, J. B. Halpern, and K. H. Welge, Chem. Lett. 43, 41 (1976);
    (c) M. Asscher and Y. Haas, Chem. Phys. Lett. 59, 231 (1978);
    (d) Y. Haas and M. Asscher, Advances in Chemical Physics (Wiley, New York, 1981), Vol. XLVH, p. 17.
  18. K. P. Huber and G. Herzberg, Molecular Spectra and Molecular Structure (Van Nostrand, Princeton, 1979) Vol. 4, p. 468.
  19. W. G. Mallard, J. H. Miller, and K. C. Smyth, J. Chem. Phys. 76, 3483 (1982).

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