Enhancement of nucleosynthesis reaction rates due to nonthermalized fast neutrons

Details Enhancement of nucleosynthesis reaction rates due to nonthermalized fast neutrons Enhancement of nucleosynthesis reaction rates due to nonthermalized fast neutrons

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...327..294p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 327, April 1, 1988, p. 294-297.

Astronomy and Astrophysics

Astrophysics

3

Elementary Particle Interactions, Fast Neutrons, Nuclear Fusion, Particle Energy, Scattering Cross Sections, Stellar Evolution

Scientific paper

It is usually assumed in stellar nucleosynthesis calculations that neutrons are completely thermalized. Hence, if the cross section of a neutron-induced reaction has a threshold, or it is suppressed by the Coulomb barrier in the exit channel, the reaction rate is quite low. However, the contribution from the decelerating fast neutrons has been neglected previously. The authors show that, though the fraction of such neutrons is small, they enhance a number of nucleosynthesis reaction rates by many orders of magnitude, especially at low temperatures.

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