New measurement of the (12)C(n, gamma)(13)C reaction cross section

Details New measurement of the (12)C(n, gamma)(13)C reaction cross section New measurement of the (12)C(n, gamma)(13)C reaction cross section

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...422..912o&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 422, no. 2, p. 912-916

Astronomy and Astrophysics

Astrophysics

34

Abundance, Carbon Isotopes, Gamma Rays, Neutron Cross Sections, Nuclear Fusion, Spectroscopic Analysis, Asymptotic Giant Branch Stars, Big Bang Cosmology, Stellar Evolution

Scientific paper

We present a new measurement of the (12)C(n, gamma)(13)C cross section for netron energies between 10 and 250 keV. In this measurement we used pulsed neutrons and detected prompt gamma-rays emitted by transitions from radiative neutron capture into the low-lying states of C-13. The Maxwellian-averaged cross section derived from the present work is 15.4 +/- 1.0 microbarn for kT = 30 keV, which is about 5 times larger than the estimated value based on the thermal-neutron capture cross section. Our results have implications for nucleosynthesis yields in models of inhomogeneous primordial nucleosynthesis.

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