1. A comparison of untagged gamma-ray and tagged-neutron yields from 241AmBe and 238PuBe sources
- Author
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E. Rofors, R. Al Jebali, Francesco Messi, Kevin Fissum, H. Perrey, Richard Hall-Wilton, N. Mauritzson, Julius Scherzinger, S. Koufigar, and J. R. M. Annand
- Subjects
Physics - Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Accelerator Physics and Instrumentation ,01 natural sciences ,Nuclear physics ,Plutonium-beryllium ,Cerium bromide ,NE-213 ,0103 physical sciences ,Neutron ,Fast neutrons ,Nuclear Experiment (nucl-ex) ,010306 general physics ,Spectroscopy ,Nuclear Experiment ,Range (particle radiation) ,Radiation ,Pulse-shape discrimination ,010308 nuclear & particles physics ,Chemistry ,Time-of-flight ,Detector ,Radiochemistry ,Gamma ray ,Acceleratorfysik och instrumentering ,Instrumentation and Detectors (physics.ins-det) ,Americium-beryllium ,Neutron temperature ,Time of flight ,Cerium-bromide ,13. Climate action ,Gamma-rays - Abstract
Untagged gamma-ray and tagged-neutron yields from 241AmBe and 238PuBe mixed-field sources have been measured. Gamma-ray spectroscopy measurements from 1 - 5 MeV were performed in an open environment using a CeBr3 detector and the same experimental conditions for both sources. The shapes of the distributions are very similar and agree well with previous data. Tagged-neutron measurements from 2 - 6 MeV were performed in a shielded environment using a NE-213 liquid-scintillator detector for the neutrons and a YAP(Ce) detector to tag the 4.44 MeV gamma-rays associated with the de-excitation of the first excited state of 12C. Again, the same experimental conditions were used for both sources. The shapes of these distributions are also very similar and agree well with previous data, each other, and the ISO recommendation. Our 238PuBe source provides approximately 2.6 times more 4.44 MeV gamma-rays and 2.4 times more neutrons over the tagged-neutron energy range, the latter in reasonable agreement with the original full-spectrum source-calibration measurements performed at the time of their acquisition., Comment: 16 pages, 6 figures
- Published
- 2017