Calculation of Dissociative Attachment in Hot <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span>

T. F. O'Malley

doi:10.1103/PhysRev.155.59

Access by Xinjiang University

Calculation of Dissociative Attachment in Hot $O_{2}$

T. F. O'Malley

DRC, Incorporated, Santa Barbara, California

PDF

Phys. Rev. 155, 59 – Published 5 March, 1967

DOI: https://doi.org/10.1103/PhysRev.155.59

Abstract

The very striking temperature dependence of the dissociative attachment cross sections found experimentally in $O_{2}$ has been reproduced by a semi-empirical calculation, assuming a Maxwell distribution of vibrational ( $v$ ) and rotational ( $r$ ) states. A recently derived expression for the cross section $σ_{v, r}$ is used, and the final-state potential curve of $O_{2}^{-}$ is parametrized to fit the experiments. The temperature shift is found to be caused by the effect on excited vibrational states of the rapidly varying "survival probability," a measure of the competition between auto-ionization and dissociation. Byproducts of the calculation are the potential curve for the final dissociating state of $O_{2}^{- *}$ , together with an estimate of its auto-ionization width $Γ_{a} (R)$ , and also the contribution of this state to the total cross section for electron-energy loss to vibrational excitation and dissociation.

References (9)

W. L. Fite and R. T. Brackmann, Proceedings of the Sixth International Conference on the Ionization Phenomena in Gases, Paris, 1963, Vol. I, p. 21 W. L. Fite, R. T. Brackmann, and W. R. Henderson, Proceedings of the Fourth International Conference on the Physics of Electronic and Atomic Collisions (Science Book-crafters, Inc., Hastings-on-Hudson, New York, 1965), p. 100
T. F. O'Malley, Phys. Rev. 150, 14 (1966)
J. N. Bardsley, A. Herzenberg, and F. Mandl, in Atomic Collision Processes, edited by M. R. C. McDowell (North-Holland Publishing Company, Amsterdam, 1964), p. 415
F. R. Gilmore, J. Quant. Spectay. Rad. Trans. 5, 369 (1965)
G. J. Schulz, Phys. Rev. 128, 178 (1962) D. Rapp and D. D. Briglia, J. Chem. Phys. 43, 1480 (1965)
Omitted endnote
Y. N. Demkov, Phys. Letters 15, 235 (1965) [2]
M. A. Fineman J. W. McGowan (private communication)
[6]

[c1] W. L. Fite and R. T. Brackmann, Proceedings of the Sixth International Conference on the Ionization Phenomena in Gases, Paris, 1963, Vol. I, p. 21 W. L. Fite, R. T. Brackmann, and W. R. Henderson, Proceedings of the Fourth International Conference on the Physics of Electronic and Atomic Collisions (Science Book-crafters, Inc., Hastings-on-Hudson, New York, 1965), p. 100

[c2] T. F. O'Malley, Phys. Rev. 150, 14 (1966)

[c3] J. N. Bardsley, A. Herzenberg, and F. Mandl, in Atomic Collision Processes, edited by M. R. C. McDowell (North-Holland Publishing Company, Amsterdam, 1964), p. 415

[c4] F. R. Gilmore, J. Quant. Spectay. Rad. Trans. 5, 369 (1965)

[c5] G. J. Schulz, Phys. Rev. 128, 178 (1962) D. Rapp and D. D. Briglia, J. Chem. Phys. 43, 1480 (1965)

[c6] Omitted endnote

[c7] Y. N. Demkov, Phys. Letters 15, 235 (1965) [2]

[c8] M. A. Fineman J. W. McGowan (private communication)

[c9] [6]

Physical Review Journals Archive

Export citation

Export citation

Calculation of Dissociative Attachment in Hot $O_{2}$

Abstract

References (9)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation

Calculation of Dissociative Attachment in Hot O2

Abstract

References (9)

Calculation of Dissociative Attachment in Hot $O_{2}$