14 MeV neutron spectra measurements with 4% energy resolution using a type IIa diamond detector

M. Pillon, M. Angelone, A.V. Krasilnikov

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A natural diamond detector has been used as a neutron spectrometer to measure 14 MeV neutron spectra produced by a neutron generator. The spectrometer chain was energy calibrated with a241Am alpha source; a resolution of 1.6% FWHM was observed. The12C(n,α0)9Be reaction which occurs in diamond was used to measure the neutron spectra and the measured energy resolution at FWHM was 4%. The detection efficiency was found to be a factor 2.5-3.5 times lower than expected. These results could be interpreted as the consequence of a loss of counts in the peak due to the mean charge collection distance of the bulk of the detector, which was determined to be dc= 71 ± 18 μm. Moreover, a novel technique which employs fast neutron interrogation has been used to determine the bulk charge collection distance in diamond; this technique could be used also with other materials. © 1995.
Original languageEnglish
Pages (from-to)473 - 483
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Issue number4
Publication statusPublished - 1 Aug 1995
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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