Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000phdt........39p&link_type=abstract
Thesis (PhD). COLORADO SCHOOL OF MINES, Source DAI-B 61/10, p. 5391, Apr 2001, pages.
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
Low energy nuclear reactions on light nuclei are important for understanding stellar and big bang nucleosynthesis. The reactions also are important in fusion reactor diagnostics. To complement previous angular distribution measurements of the (d,p) reactions, the current research investigates the analog (d,n) reactions. The γ photon flux accompanying the neutrons required excellent neutron-γ discrimination. A pulse shape discriminator was used to reject the γ signal for the (d,n) experiments. The detector-discriminator combination also performed well as a γ spectrometer. Measurements of the (d,n) reaction on 2H, 6Li, 7Li, 9Be, 10B, and 11B were performed at deuteron laboratory energies below 150 keV. The relative angular distributions, absolute reaction cross sections, and astrophysical S-factors were derived. The application of the cross section results to stellar and big bang nucleosynthesis and to fusion diagnostics was discussed.
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