Development of a radiation detector made of a cubic boron nitride polycrystal

Kaneko, J.H.; Taniguchi, T.; Kawamura, S.; Satou, K.; Fujita, F.; Homma, A.; Furusaka, M.

Development of a radiation detector made of a cubic boron nitride polycrystal

Kaneko, J.H.; Taniguchi, T.; Kawamura, S. et al.

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, 2007, 576(2-3), 417-421

Permalink : https://hdl.handle.net/2115/28005

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アクセス権	open access
URI	https://hdl.handle.net/2115/28005
タイトル	Development of a radiation detector made of a cubic boron nitride polycrystal
著者	Kaneko, J.H. ; Taniguchi, T. ; Kawamura, S. ; Satou, K. ; Fujita, F. ; Homma, A. ; Furusaka, M.
e-Rad_Researcher 90333624 著者名 Kaneko, J.H.
著者名 Taniguchi, T.
著者名 Kawamura, S.
著者名 Satou, K.
著者名 Fujita, F.
著者名 Homma, A.
著者名 Furusaka, M.
言語	英語
キーワード	Cubic boron nitride
	High-temperature and high-pressure synthesis
	Radiation detector
	α-Particles
	Neutrons
	Boron neutron-capture therapy
発行日	2007-06-21
出版者	Elsevier B.V.
収録物名	Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
巻(号)	576(2-3)
ページ	417-421
抄録	Radiation detectors were fabricated using single and polycrystalline cubic boron nitride (cBN) crystals synthesized using a high-pressure and high-temperature (HP/HT) method. Although cBN single crystals obtained using a barium BN solvent system were nearly colorless and displayed high electrical resistance, in contrast to conventional amber-colored crystals, the single crystals exhibit a leakage current that renders them unsuitable for use in a detector. In contrast, a detector made of a cBN polycrystal synthesized by direct transformation had a very low leakage current of 0.2 pA with bias voltage of 100 V; it functioned as a radiation detector. From an experiment using α-particles, holes traversed a longer distance than electrons. It had a fast rise time of approximately 300 ns. The detector also showed sensitivity to neutrons. However, output signals were smaller than the expected voltage from the experiment using α-particles, probably because of charge accumulation from the high-neutron flux.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0168-9002
関連情報	URI http://www.sciencedirect.com/science/journal/01689002
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.nima.2007.03.016