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Astron. Astrophys. 356, L57-L61 (2000)

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Letter to the Editor

Suppression of thermonuclear reactions in dense plasmas instead of Salpeter's enhancement

V.N. Tsytovich

General Physics Institute, Russian Academy of Sciences, Vavilova str. 38, 117942, Moscow, Russia (tsytov@td.lpi.ac.ru)

Received 27 January 2000 / Accepted 18 March 2000


A kinetic description of collective plasma effects for the thermonuclear reaction rates based on the generalization of modern plasma fluctuation approach shows that, in contrast to Salpeter's enhancement, a decrease of the thermonuclear reaction rates is present which is larger for larger nuclei charge. By numerical evaluation of the thermonuclear reaction rates in the solar interior it is found that the decrease approaches a factor [FORMULA] for reactions with [FORMULA] nuclei, and this could be relevant for the problem of solar neutrino deficit.

Key words: nuclear reactions, nucleosynthesis, abundances – plasmas – Sun: interior – dense matter

© European Southern Observatory (ESO) 2000

Online publication: April 10, 2000