Neutrino-induced production of isotope B-11 in the carbon layer of a star

Neutrinos emitted by a collapsing stellar core are shown to interact effectively with the carbon layer of the stellar envelope, thereby producing a sufficiently large amount of isotope B-11 to account for the cosmic abundance observed. Since the mechanism of stellar envelope expulsion which accompan...

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Bibliographic Details
Published in:Astrophysics and space science 1980-06, Vol.70 (1), p.33-53
Main Authors: DOMOGATSKII, G V, NADEZHIN, D K
Format: Article
Language:English
Online Access:Get full text
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Summary:Neutrinos emitted by a collapsing stellar core are shown to interact effectively with the carbon layer of the stellar envelope, thereby producing a sufficiently large amount of isotope B-11 to account for the cosmic abundance observed. Since the mechanism of stellar envelope expulsion which accompanies the gravitational collapse of the core has not yet been developed, the temperature conditions of the expelled envelope are not quite clear. The net yield of isotope B-11, relative to carbon is determined. The upper limit of the above range of calculated values refers to the case when the neutrino-induced isotope B-11 burns via thermonuclear reactions due to the carbon layer heated by the neutrino emission itself. The lower limit was obtained within the model assuming a considerably higher temperature of matter which results from the condition of hydrostatic equilibrium.
ISSN:0004-640X
DOI:10.1007/BF00641663