6:1 aspect ratio silicon pillar based thermal neutron detector filled with 10B

R. J. Nikolić; A. M. Conway; C. E. Reinhardt; R. T. Graff; T. F. Wang; N. Deo; C. L. Cheung

doi:10.1063/1.2985817

6:1 aspect ratio silicon pillar based thermal neutron detector filled with ¹⁰B

R. J. Nikolić, A. M. Conway, C. E. Reinhardt, R. T. Graff, T. F. Wang, N. Deo, C. L. Cheung

Chemistry

Research output: Contribution to journal › Article › peer-review

85 Scopus citations

Abstract

Current helium-3 tube based thermal neutron detectors have shortcomings in achieving simultaneously high efficiency and low voltage while maintaining adequate fieldability performance. By using a three-dimensional silicon p-i-n diode pillar array filled with boron-10 these constraints can be overcome. The fabricated pillar structured detector reported here is composed of 2 μm diameter silicon pillars with a 4 μm pitch and height of 12 μm. A thermal neutron detection efficiency of 7.3+-0.6% and a neutron-to-gamma discrimination of ¹⁰⁵ at 2 V reverse bias were measured for this detector. When scaled to larger aspect ratio, a high efficiency device is possible.

Original language	English (US)
Article number	133502
Journal	Applied Physics Letters
Volume	93
Issue number	13
DOIs	https://doi.org/10.1063/1.2985817
State	Published - 2008

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2985817

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title = "6:1 aspect ratio silicon pillar based thermal neutron detector filled with 10B",

abstract = "Current helium-3 tube based thermal neutron detectors have shortcomings in achieving simultaneously high efficiency and low voltage while maintaining adequate fieldability performance. By using a three-dimensional silicon p-i-n diode pillar array filled with boron-10 these constraints can be overcome. The fabricated pillar structured detector reported here is composed of 2 μm diameter silicon pillars with a 4 μm pitch and height of 12 μm. A thermal neutron detection efficiency of 7.3+-0.6% and a neutron-to-gamma discrimination of 105 at 2 V reverse bias were measured for this detector. When scaled to larger aspect ratio, a high efficiency device is possible.",

author = "Nikoli{\'c}, {R. J.} and Conway, {A. M.} and Reinhardt, {C. E.} and Graff, {R. T.} and Wang, {T. F.} and N. Deo and Cheung, {C. L.}",

note = "Funding Information: This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, LLNL-JRNL-405940.",

year = "2008",

doi = "10.1063/1.2985817",

language = "English (US)",

volume = "93",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - 6:1 aspect ratio silicon pillar based thermal neutron detector filled with 10B

AU - Nikolić, R. J.

AU - Conway, A. M.

AU - Reinhardt, C. E.

AU - Graff, R. T.

AU - Wang, T. F.

AU - Deo, N.

AU - Cheung, C. L.

N1 - Funding Information: This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, LLNL-JRNL-405940.

PY - 2008

Y1 - 2008

N2 - Current helium-3 tube based thermal neutron detectors have shortcomings in achieving simultaneously high efficiency and low voltage while maintaining adequate fieldability performance. By using a three-dimensional silicon p-i-n diode pillar array filled with boron-10 these constraints can be overcome. The fabricated pillar structured detector reported here is composed of 2 μm diameter silicon pillars with a 4 μm pitch and height of 12 μm. A thermal neutron detection efficiency of 7.3+-0.6% and a neutron-to-gamma discrimination of 105 at 2 V reverse bias were measured for this detector. When scaled to larger aspect ratio, a high efficiency device is possible.

AB - Current helium-3 tube based thermal neutron detectors have shortcomings in achieving simultaneously high efficiency and low voltage while maintaining adequate fieldability performance. By using a three-dimensional silicon p-i-n diode pillar array filled with boron-10 these constraints can be overcome. The fabricated pillar structured detector reported here is composed of 2 μm diameter silicon pillars with a 4 μm pitch and height of 12 μm. A thermal neutron detection efficiency of 7.3+-0.6% and a neutron-to-gamma discrimination of 105 at 2 V reverse bias were measured for this detector. When scaled to larger aspect ratio, a high efficiency device is possible.

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ER -

6:1 aspect ratio silicon pillar based thermal neutron detector filled with ¹⁰B

Abstract

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