Improvement of γ-ray energy resolution of LaBr3:Ce3+ scintillation detectors by Sr2+ and Ca2+ co-doping
- 22 April 2013
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 102 (16)
- https://doi.org/10.1063/1.4803440
Abstract
Commercially available LaBr3:5% Ce3+ scintillators show with photomultiplier tube readout about 2.7% energy resolution for the detection of 662 keV gamma-rays. Here we will show that by co-doping LaBr3: Ce3+ with Sr2+ or Ca2+ the resolution is improved to 2.0%. Such an improvement is attributed to a strong reduction of the scintillation light losses that are due to radiationless recombination of free electrons and holes during the earliest stages (1-10 ps) inside the high free charge carrier density parts of the ionization track. (C) 2013 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4803440]Keywords
This publication has 18 references indexed in Scilit:
- Energy resolution and related charge carrier mobility in LaBr3:Ce scintillatorsJournal of Applied Physics, 2013
- Scintillation Properties of and Self Absorption in ${\rm SrI}_{2}\!:\!{\rm Eu}^{2+}$IEEE Transactions on Nuclear Science, 2011
- Excitation density, diffusion‐drift, and proportionality in scintillatorsPhysica Status Solidi (b), 2010
- Fundamental Limitations in the Performance of ${\rm Ce}^{3+}$–, ${\rm Pr}^{3+}$–, and ${\rm Eu}^{2+}$–Activated ScintillatorsIEEE Transactions on Nuclear Science, 2010
- The CMS experiment at the CERN LHCJournal of Instrumentation, 2008
- Inorganic scintillators: today and tomorrowJournal of Luminescence, 2002
- High-energy-resolution scintillator: Ce3+ activated LaBr3Applied Physics Letters, 2001
- High-energy-resolution scintillator: Ce3+ activated LaCl3Applied Physics Letters, 2000
- Non-proportionality in the scintillation response and the energy resolution obtainable with scintillation crystalsIEEE Transactions on Nuclear Science, 1995
- Alkali Halide Scintillation CountersPhysical Review B, 1948