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

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

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..70...33d&link_type=abstract

Astrophysics and Space Science, vol. 70, no. 1, June 1980, p. 33-53.

Astronomy and Astrophysics

Astrophysics

7

Boron Isotopes, Carbon Stars, Cores, Gravitational Collapse, Neutrinos, Stellar Envelopes, Stellar Gravitation, Abundance, Cosmic Dust, Hydrostatic Pressure, Kinetic Equations, Particle Emission, Particle Interactions, Stellar Models, Stellar Temperature, Thermonuclear Reactions

Scientific paper

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.

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