Fast Neutron Coincidence Spectrometer. II
作者:
Paul R. Chagnon,
George E. Owen,
Leon Madansky,
期刊:
Review of Scientific Instruments
(AIP Available online 1955)
卷期:
Volume 26,
issue 12
页码: 1165-1170
ISSN:0034-6748
年代: 1955
DOI:10.1063/1.1715214
出版商: AIP
数据来源: AIP
摘要:
A fast neutron coincidence spectrometer utilizing stilbene scintillators is described. The principle of the spectrometer is based upon the pulse‐height analysis of the recoil protons resulting from a 45 degree scattering of the incident neutron beam. This is achieved by requiring the scattered neutron to be recorded in a secondary ring of ten stilbene scintillators. With delays corresponding to a fixed time of flight, a coincidence between the primary and secondary crystals gates the primary pulse. At 4 Mev the efficiency is of the order of 10−4per incident neutron, and the pulse‐height distribution has a width at half‐maximum of 17%. The corresponding energy width is 10%. The time‐of‐flight characteristic is used to reject gamma rays. Limitations caused by accidentals and pulse‐height resolution are discussed.
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