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Molecular Photoionization Processes of Astrophysical and Aeronomical Interest

  • Chapter
Molecular Astrophysics

Part of the book series: NATO ASI Series ((ASIC,volume 157))

Abstract

Ionization processes dominate photon attenuation cross sections over wide spectral ranges and, consequently, are relevant in a significant number of astrophysical connections [1–4]. Although heating and the ionization thought to initiate ion-molecule chemistry in interstellar clouds is largely attributed to cosmic rays [5], uv and x-ray photoionization processes can also contribute in diffuse clouds and in dense clouds in the immediate neighborhoods of uv-luminous O- and B-type stars, planetary nebulae, and supernovae [6–8]. Precursor radiation from recombining gas in shock regions can also ionize molecules under appropriate conditions [9]. Studies of stellar [10] and planetary atmospheres [11], and of cometary comae [12], furthermore, involve a variety of photoionization processes. Refined theoretical and computational models in such astrophysical and aeronomical situations require reliable values of relevant photoionization cross sections [13].

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Authors and Affiliations

  1. Department of Chemistry, Indiana University, Bloomington, IN, 47405, USA

    P. W. Langhoff

  2. Max-Planck-lnstitut für Astrophysik, Karl-Schwarzschild-Str. 1, 8046, Garching bei München, Federal Republic of Germany

    P. W. Langhoff

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  1. P. W. Langhoff
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Editors and Affiliations

  1. Institut für Astrophysik, Max-Planck-lnstitut für Physik und Astrophysik, Garching-bei-München, Germany

    G. H. F. Diercksen

  2. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA

    W. F. Huebner

  3. Department of Chemistry, Indian University, Bloomington, Indiana, USA

    P. W. Langhoff

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Langhoff, P.W. (1985). Molecular Photoionization Processes of Astrophysical and Aeronomical Interest. In: Diercksen, G.H.F., Huebner, W.F., Langhoff, P.W. (eds) Molecular Astrophysics. NATO ASI Series, vol 157. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5432-8_24

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  • DOI: https://doi.org/10.1007/978-94-009-5432-8_24

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