A unified model of the dynamics and spectroscopy of the g 3Σ0- and E1Σ+ states of hydrogen chloride

Journal of Chemical Physics

Volumn 108, Issue 3, 1998, Pages 984-989

  Strizhev, Alex ^a   Li, Xiaonong ^a   Liyanage, Rohana ^a,c   Gordon, Robert J ^a   Field, Robert W ^b  

^a UNIVERSITY OF ILLINOIS AT CHICAGO   (United States)

^b MASSACHUSETTS INSTITUTE OF TECHNOLOGY   (United States)

^c UNIVERSITY OF UTAH   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0040100544     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.475461     Document Type: Article

References (22)

1. H. Lefebvre-Brion and R. W. Field, Perturbations in the Spectra of Diatomic Molecules (Academic, New York, 1986).
2. S. G. Tilford and M. L. Ginter, J. Mol. Spectrosc. 40, 568 (1971).
3. P. J. Dagdigian, D. F. Varley, R. Liyanage, R. J. Gordon, and R. W. Field, J. Chem. Phys. 105, 10251 (1996).
4. R. Liyanage, Y. Yang, S. Hashimoto, R. J. Gordon, and R. W. Field, J. Chem. Phys. 103, 6811 (1995).
5. R. Liyanage, P. T. A. Reilly, Y.-A. Yang, R. J. Gordon, and R. W. Field, Chem. Phys. Lett. 216, 554 (1993).
6. Y. Xie, P. T. A. Reilly, S. Chilukuri, and R. J. Gordon, J. Chem. Phys. 95, 854 (1991).
7. S. Arepalli, N. Presser, D. Robie, and R. J. Gordon, Chem. Phys. Lett. 118, 88 (1985).
8. W. C. Wiley and I. H. McLaren, Rev. Sci. Instrum. 26, 1150 (1955).
9. J. Zhang, M. Dulligan, and C. Wittig, J. Chem. Phys. 107, 1403 (1987).
10. 3/2). In Ref. 4 a calibration factor of 0.85, based on the measurements of Matsumi et al. [J, Chem. Phys. 97, 5261 (1992)] was used, which led to systematically lower values of Γ.
11. Z. Xu, B. Koplitz, and C. Wittig, J. Chem. Phys. 87, 1062 (1987); 90, 2692 (1989).
12. Z. Xu, B. Koplitz, and C. Wittig, J. Chem. Phys. 87, 1062 (1987); 90, 2692 (1989).
13. R. N. Dixon, J. Nightingale, C. M. Western, and X. Yang, Chem. Phys. Lett. 151, 328 (1988).
14. R. J. Gordon and G. E. Hall, in Advances in Chemical Physics, edited by I. Pngogine and S. A. Rice, (Wiley, New York, 1996), Vol. 96, pp. 1-50.
15. 2 value for a Q-branch of a Σ-Π transition, which is assumed to be responsible for the splitting in D(W/v).
16. + core, whereas the superexcited state reached from the E state can ionize directly. The ratio of ionization to predissociation is determined, therefore, by the amount of valence-Rydberg mixing at the 2ω level.
17. Y. Matsumi, K. Tonokura, M. Kawasaki, and T. Ibuki, J. Chem. Phys. 93, 7981 (1990).
18. M. H. Alexander, B. Pouilly, and T. Duhoo, J. Chem. Phys. 99, 1752 (1993).
19. R. Liyanage, R. J. Gordon, and R. W. Field (unpublished).
20. A. C. Kummel, G. O. Sitz, and R. N. Zare, J. Chem. Phys. 85, 6874 (1986).
21. T. F. Hansico and A. C. Kummel, J. Phys. Chem. 95, 8565 (1991).
22. Although the 2 + 1 REMPI signal for the C state is much weaker than that for the E state, its oscillator strength could be much larger than that of the E state. We observed that the width of the C-X (0,0) Q(1) transition of HCl is ∼25 greater than that of the corresponding E state transition. For both states the predissociation rate is much larger than the ionization rate. We estimate from the linewidths that the predissociation rate of the C (v = 0, J=1) level is ∼25 times greater than the corresponding level of the E state. These two factors combine to reduce the REMPI signal for the C state by 2-3 orders of magnitude.