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Far-ultraviolet signatures of the 3He(n,tp) reaction in noble gas mixtures

Authors
  • Hughes, Patrick P.
  • Coplan, Michael A.
  • Thompson, Alan K.
  • Vest, Robert E.
  • Clark, Charles W.
Type
Published Article
Publication Date
Sep 23, 2010
Submission Date
Sep 23, 2010
Identifiers
DOI: 10.1063/1.3521285
Source
arXiv
License
Yellow
External links

Abstract

Previous work showed that the 3He(n,tp) reaction in a cell of 3He at atmospheric pressure generated tens of far-ultraviolet photons per reacted neutron. Here we report amplification of that signal by factors of 1000 and more when noble gases are added to the cell. Calibrated filter-detector measurements show that this large signal is due to noble-gas excimer emissions, and that the nuclear reaction energy is converted to far-ultraviolet radiation with efficiencies of up to 30%. The results have been placed on an absolute scale through calibrations at the NIST SURF III synchrotron. They suggest possibilities for high-efficiency neutron detectors as an alternative to existing proportional counters.

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