Nine element Si-based pillar structured thermal neutron detector

R. J. Nikolic, A. M. Conway, R. Radev, Q. Shao, L. Voss, T. F. Wang, J. R. Brewer, C. L. Cheung, L. Fabris, C. L. Britton, M. N. Ericson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations


Solid state thermal neutron detectors are desirable for replacing the current 3He based technology, which has some limitations arising from stability, sensitivity to microphonics and the recent shortage of 3He. Our approach to designing such solid state detectors is based on the combined use of high aspect ratio silicon PIN pillars surrounded by 10B, the neutron converter material. To date, our highest measured detection efficiency is 20%. An efficiency of greater than 50% is expected while maintaining high gamma rejection, low power operation and fast timing for multiplicity counting for our engineered device architecture. The design of our device structure, progress towards a nine channel system and detector scaling challenges are presented.

Original languageEnglish (US)
Title of host publicationHard X-Ray, Gamma-Ray, and Neutron Detector Physics XII
StatePublished - 2010
Externally publishedYes
EventHard X-Ray, Gamma-Ray, and Neutron Detector Physics XII - San Diego, CA, United States
Duration: Aug 2 2010Aug 4 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceHard X-Ray, Gamma-Ray, and Neutron Detector Physics XII
Country/TerritoryUnited States
CitySan Diego, CA


  • Thermal neutron detector
  • boron
  • pillar

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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