Spectra of fast neutrons using a lithiated glass film on silicon

Steven Wallace, Andrew C. Stephan, Phillip C. Womble, Gavi Begtrup, Sheng Dai

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

Experimental results of a neutron detector manufactured by coating a silicon charged particle detector with a film of lithiated glass are presented. The silicon surface barrier detector (SBD) responds to the 6Li(n, alpha)triton reaction products generated in the thin film of lithiated glass entering the SBD. Neutron spectral information is present in the pulse height spectrum. An energy response is seen that clearly shows that neutrons from a Pu-Be source and from a deuterium-tritium (D-T) pulsed neutron generator can be differentiated and counted above a gamma background. The significant result is that the fissile content within a container can be measured using a pulsed D-T neutron generator using the neutrons that are counted in the interval between the pulses.

Original languageEnglish
Pages (from-to)16-19
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume505
Issue number1-2
DOIs
StatePublished - Jun 1 2003
EventProceedings of the tenth Symposium on Radiation - Ann Arbor, MI, United States
Duration: May 21 2002May 23 2002

Keywords

  • D-T neutron generator
  • Differential die-away detection
  • Fast neutron detector
  • Lithiated sol-gel glass
  • Pu-Be source

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