In view of the highly demanded new and accurate data on prompt gamma-ray emission in nuclear fission a major part of investigations is directed towards the selection of suitable detector systems. Here we have studied a new type of cyrstal scintillation detectors made from cerium-bromide (CeBr3). For the first time a full characterization of such a detector is presented in terms of energy resolution, pulse-height linearity, intrinsic activity and intrinsic timing resolution. In particular the later one is very important for prompt fission gamma-ray studies, because the presence of fast neutrons, emitted in fission too, requires the time-of-flight method for their discrimination. The energy resolution has been found to be comparable to that of cerium-doped LaCl3 detectors at an efficiency comparable to the one of a LaBr3 detector of the same size. The intrinsic activity of the CeBr3 crystal was observed to be much lower compared to lanthanum halide crystals. The intrinsic timing resolution of a coaxial 1"x1" sized detector was measured relative to that of a previously characterized LaCl3 detector and found to be (326+-7)ps at Co-60 energies, which is in between those of a LaBr3 and a LaCl3 detector of same size.
BILLNERT Robert;
OBERSTEDT Stephan;
ANDREOTTI Erica;
HULT Mikael;
MARISSENS Gerd;
OBERSTEDT Andreas;
2011-07-05
ELSEVIER SCIENCE BV
JRC63804
0168-9002,
www.elsevier.com/locate/nima,
https://publications.jrc.ec.europa.eu/repository/handle/JRC63804,
10.1016/j.nima.2011.05.034,
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