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

Authors
Strasser, P Kubono, S Miyachi, T Tanaka, MH
Citation
P. Strasser et al., Low-background gamma-ray detector system for radiative capture reaction experiments with RI beams, NUCL INST A, 449(3), 2000, pp. 546-554
Citations number
17
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
449
Issue
3
Year of publication
2000
Pages
546 - 554
Database
ISI
SICI code
0168-9002(20000721)449:3<546:LGDSFR>2.0.ZU;2-P
Abstract
A low-background gamma-ray detector of NaI(Tl) comprising a core surrounded by an annulus was developed for nuclear astrophysics experiments with radi oactive ion beams, mostly for detailed studies of low-energy radiative capt ure reactions that involve proton and alpha particles. Monte Carlo simulati ons using EGS4 were performed to calculate the full-energy detection effici ency. The background was satisfactorily reduced as designed. The best SIN r atio for very low-event rate was obtained using the annulus in anticoincide nce with the core. A consideration of an experiment of astrophysical intere st, the Ne-19(p,gamma)Na-20 reaction. is also briefly discussed. (C) 2000 E lsevier Science B.V. All rights reserved.