Low-background gamma-ray detector system for radiative capture reaction experiments with RI beams

Details Low-background gamma-ray detector system for radiative capture reaction experiments with RI beams Low-background gamma-ray detector system for radiative capture reaction experiments with RI beams

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000nimpa.449..546s&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 449, Issue 3, p. 546-554.

Physics

Scientific paper

A low-background gamma-ray detector of NaI(Tl) comprising a core surrounded by an annulus was developed for nuclear astrophysics experiments with radioactive ion beams, mostly for detailed studies of low-energy radiative capture reactions that involve proton and alpha particles. Monte Carlo simulations using EGS4 were performed to calculate the full-energy detection efficiency. The background was satisfactorily reduced as designed. The best /S/N ratio for very low-event rate was obtained using the annulus in anticoincidence with the core. A consideration of an experiment of astrophysical interest, the 19Ne(p,γ)20Na reaction, is also briefly discussed.

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