14 MeV Neutron Spectra Measurements using Type IIa Diamond Detectors
- 1 July 1996
- journal article
- Published by Oxford University Press (OUP) in Radiation Protection Dosimetry
- Vol. 66 (1) , 371-374
- https://doi.org/10.1093/oxfordjournals.rpd.a031757
Abstract
Natural diamond detectors have been used as a neutron spectrometer to measure 14 MeV neutron spectra produced by a neutron generator. The spectrometer chain was energy calibrated with a 241Am alpha source and a precision pulser. The different reactions between diamond and neutrons were identified and the 12C(n,a0)9Be reaction was used to measure the neutron spectra. The 12C(n,a0)9Be reaction produces a peak in the pulse-height spectrum at energy En of 5.7 MeV, where En is the incident neutron energy. The neutron energy En measured had a resolution ranging between 3 and 7%, depending on the detector tested, thus showing that diamond detectors could be used as spectrometers for monoenergetic neutrons. The comparison of the experimental and the theoretical detection efficiency is discussed.Keywords
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