Astronomy and Astrophysics – Astrophysics
Scientific paper
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.
Igashira Masayuki
Irie Tsutomu
Nagai Yuki
Ohsaki Toshiro
Seino S.
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