High aspect ratio composite structures with 48.5% thermal neutron detection efficiency

Q. Shao, L. F. Voss, A. M. Conway, R. J. Nikolic, M. A. Dar, Chin Li "Barry" Cheung

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The pillar structured thermal neutron detector is based on the combination of high aspect ratio silicon p-i-n pillars surrounded by the neutron converter material 10B. By etching high aspect ratio pillar structures into silicon, the result is a device that efficiently absorbs the thermal neutron flux by accommodating a large volume fraction of 10B within the silicon pillar array. Here, we report a thermal neutron detection efficiency of 48.5% using a 50 μm pillar array with an aspect ratio of 25:1.

Original languageEnglish (US)
Article number063505
JournalApplied Physics Letters
Volume102
Issue number6
DOIs
StatePublished - Feb 11 2013

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composite structures
high aspect ratio
thermal neutrons
silicon
neutron counters
flux (rate)
converters
aspect ratio
etching
neutrons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

High aspect ratio composite structures with 48.5% thermal neutron detection efficiency. / Shao, Q.; Voss, L. F.; Conway, A. M.; Nikolic, R. J.; Dar, M. A.; Cheung, Chin Li "Barry".

In: Applied Physics Letters, Vol. 102, No. 6, 063505, 11.02.2013.

Research output: Contribution to journalArticle

Shao, Q. ; Voss, L. F. ; Conway, A. M. ; Nikolic, R. J. ; Dar, M. A. ; Cheung, Chin Li "Barry". / High aspect ratio composite structures with 48.5% thermal neutron detection efficiency. In: Applied Physics Letters. 2013 ; Vol. 102, No. 6.
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