Abstract
Photoabsorption by systems of hydrogen atoms and protons in the solar photosphere is studied. Analytical formulas for the partial cross sections for photodissociation of the H +2 molecular ion are derived for the cases of fixed vibrational-rotational energy levels and averaging over a Boltzmann distribution for a given temperature. The photoabsorption coefficients for bound-free and free-free transitions of H-H+ in the solar photosphere are calculated. These are compared with the absorption coefficients for photo-ejection of an electron from a negative hydrogen ion H− and free-free transitions of an electron in the field of a hydrogen atom H. Results can be applied to the Sun and hotter stars.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. Unsöld and B. Baschek, The New Cosmos (Springer, Berlin, 1991).
M. Venuti and P. Decleva, J. Phys. D 30, 4839 (1997).
K. L. Bell and K. A. Berrington, J. Phys. B 20, 801 (1987).
R. Wildt, Observatory 64, 195 (1942); R. Wildt, Astron. J. 54, 139 (1949).
D. R. Bates, J. Chem. Phys. 19, 1122 (1951); D. R. Bates, K. Ledsham, and A. L. Stewart, Philos. Trans. R. Soc. A 246, 215 (1953).
D. M. Bishop and L. M. Cheung, J. Phys. B 11, 3133 (1978).
D. R. Bates, Mon. Not. R. Astron. Soc. 112, 40 (1952).
L. D. Landau and E. M. Lifshitz, Statistical Physics (Nauka, Moscow, 1976; Pergamon, Oxford, 1980).
R. A. Buckingham, S. Reid, and R. Spence, Mon. Not. R. Astron. Soc. 112, 382 (1952).
R. L. Kurucz, Atlas: A Computer Program for Calculating Model Stellar Atmospheres, Spec. Report No. 309 of Smith. Astrophys. Obs.
Yu. D. Oksyuk, Opt. Spektrosk. 23, 214 (1967).
G. H. Dunn, Phys. Rev. A: Gen. Phys. A 172, 172 (1968).
K. P. Huber and G. Herzberg, Molecular Spectra and Molecular Structure: IV. Constants of Diatomic Molecules (Van Nostrand Reinhold, New York, 1979; Mir, Moscow, 1984), Chap. 1.
I. I. Sobel’man, Introduction to the Theory of Atomic Spectra (Nauka, Moscow, 1977).
V. S. Lebedev and V. S. Marchenko, Tr. Fiz. Inst. im. P. N. Lebedeva 145, 79 (1984).
L. D. Landau and E. M. Lifshitz, Quantum Mechanics: Nonrelativistic Theory (Nauka, Moscow, 1974; Pergamon, Oxford, 1977).
V. S. Lebedev, J. Phys. B: At. Mol. Opt. Phys. B 24, 1993 (1991).
Handbook of Special Functions, Ed. by M. Abramovits and I. Stigan (Nauka, Moscow, 1979).
E. E. Nikitin and S. Ya. Umanskii, Nonadiabatic Transitions in the Presence of Slow Atomic Collisions (Atomizdat, Moscow, 1979).
Author information
Authors and Affiliations
Additional information
__________
Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Zhurnal, Vol. 77, No. 5, 2000, pp. 390–400.
Original Russian Text Copyright © 2000 by Lebedev, Presnyakov, Sobel’man.
Rights and permissions
About this article
Cite this article
Lebedev, V.S., Presnyakov, L.P. & Sobel’man, I.I. Photodissociative absorption by H +2 in the solar photosphere. Astron. Rep. 44, 338–347 (2000). https://doi.org/10.1134/1.163856
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.163856