Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 594, Issue 1, Pages 56-60Publisher
ELSEVIER
DOI: 10.1016/j.nima.2008.06.008
Keywords
LaBr3 : Ce; gamma spectroscopy; radioactive ion beam
Categories
Funding
- National Science Foundation [PHY-0606007]
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The scintillator material LaBr3:Ce, which was discovered in 2001, has grown in popularity for a variety of applications in homeland security and nuclear medicine. In this paper we investigate its use for nuclear science spectroscopy applications in the context of in-beam gamma-ray spectroscopy with fast ion beams. in such experiments, the Doppler broadening of the gamma-ray line measured with a finite-size detector in the laboratory fundamentally limits the achievable energy resolution. For a typical experiment this effect is of the order of 3%. With the intrinsic energy resolution of LaBr3:Ce better than 3% FWHM at 662 keV, and its favorable stopping power, it could be a nearly ideal scintillator for gamma-ray spectroscopy applications with fast beams. Results from in-beam gamma-ray spectroscopy measurements using two LaBr3:Ce scintillators are presented and compared to results from segmented germanium detectors. Results from these measurements suggest that LaBr3:Ce based scintillation arrays can provide a viable tool for many experiments. Additionally, we show that the excellent timing properties of LaBr3:Ce can significantly reduce background events in the gamma-ray spectra. (C) 2008 Elsevier B.V. All rights reserved.
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