Enhanced Discrimination in Co-doped LaBr3Ce
- 15 February 2016
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 63 (1), 416-421
- https://doi.org/10.1109/tns.2016.2515024
Abstract
LaBr 3 :Ce crystal scintillator can be co-doped with various alkaline earth metals to improve light output and energy resolution of the basic scintillator. Another benefit is improvement of alpha/gamma discrimination via pulse shape analysis. LaBr 3 :Ce contains a low level of actinium contamination, which produces an alpha particle background in radiation energy spectra. This background is difficult to discriminate from gamma rays. Conversely, the addition of co-dopant into the crystal makes the alpha response much easier to distinguish. LaBr 3 :Ce, Sr, for example, produces a slow decay component in the scintillation pulse when excited by radiation. The amplitude of the slow decay component changes in response to a gamma ray versus a heavy charged particle. The change in pulse shape can be used to eliminate the alpha background or enable detection of neutron reaction products.Keywords
This publication has 21 references indexed in Scilit:
- Pulse shape discrimination of Cs2LiYCl6:Ce3+ scintillator from −30 °C to 180 °CNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2015
- Scintillation and detection characteristics of high-sensitivity CeBr3 gamma-ray spectrometersNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013
- Improvement of γ-ray energy resolution of LaBr3:Ce3+ scintillation detectors by Sr2+ and Ca2+ co-dopingApplied Physics Letters, 2013
- Study of 138La radioactive decays using LaBr3 scintillatorsNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2012
- Excitation density, diffusion‐drift, and proportionality in scintillatorsPhysica Status Solidi (b), 2010
- Contamination Studies of LaCl$_3$:Ce ScintillatorsIEEE Transactions on Nuclear Science, 2006
- Neutron detection with mercuric iodideIEEE Transactions on Nuclear Science, 2004
- Design considerations for thin film coated semiconductor thermal neutron detectors—I: basics regarding alpha particle emitting neutron reactive filmsNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2003
- Pulse shape discrimination in inorganic and organic scintillators. INuclear Instruments and Methods, 1971
- Scintillation Response of Activated Inorganic Crystals to Various Charged ParticlesPhysical Review B, 1961