Screening in thermonuclear reaction rates in the sun

Andrei V. Gruzinov, John N. Bahcall

    Research output: Contribution to journalArticle

    Abstract

    We evaluate the effect of electrostatic screening by ions and electrons on low-Z thermonuclear reactions in the Sun. We use a mean field formalism and calculate the electron density of the screening cloud using the appropriate density matrix equation of quantum statistical mechanics. Because of well-understood physical effects that are included for the first time in our treatment, the calculated enhancement of reaction rates does not agree with the frequently used interpolation formulae. Our result does agree, within small uncertainties, with Salpeter's weak screening formula. If weak screening is used instead of the commonly employed screening prescription of Graboske et al., the predicted 8B neutrino flux is increased by 7% and the predicted chlorine rate is increased by 0.4 SNU.

    Original languageEnglish (US)
    Pages (from-to)996-1001
    Number of pages6
    JournalAstrophysical Journal
    Volume504
    Issue number2 PART I
    DOIs
    StatePublished - 1998

    Fingerprint

    thermonuclear reactions
    reaction rate
    sun
    reaction kinetics
    screening
    statistical mechanics
    electron density
    mechanics
    chlorine
    interpolation
    neutrinos
    electrostatics
    formalism
    electron
    matrix
    ion
    augmentation
    ions
    electrons

    Keywords

    • Nuclear reactions, nucleosynthesis, abundances
    • Sun: abundances
    • Sun: interior

    ASJC Scopus subject areas

    • Space and Planetary Science

    Cite this

    Gruzinov, A. V., & Bahcall, J. N. (1998). Screening in thermonuclear reaction rates in the sun. Astrophysical Journal, 504(2 PART I), 996-1001. https://doi.org/10.1086/306116

    Screening in thermonuclear reaction rates in the sun. / Gruzinov, Andrei V.; Bahcall, John N.

    In: Astrophysical Journal, Vol. 504, No. 2 PART I, 1998, p. 996-1001.

    Research output: Contribution to journalArticle

    Gruzinov, AV & Bahcall, JN 1998, 'Screening in thermonuclear reaction rates in the sun', Astrophysical Journal, vol. 504, no. 2 PART I, pp. 996-1001. https://doi.org/10.1086/306116
    Gruzinov, Andrei V. ; Bahcall, John N. / Screening in thermonuclear reaction rates in the sun. In: Astrophysical Journal. 1998 ; Vol. 504, No. 2 PART I. pp. 996-1001.
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