C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 11/61 (2006.01) C09K 11/00 (2006.01) C09K 11/85 (2006.01) G01T 1/20 (2006.01) G01T 1/202 (2006.01) G01T 3/06 (2006.01)
Patent
CA 2717341
To provide a scintillator for neutron detection which has high sensitivity to neutron rays, and is reduced in a background noise attributed to .gamma. rays. [Means to Solve the Problems] A scintillator for neutron detection, comprising a metal fluoride crystal containing, as constituent elements, a metal having a valence of 2 or higher, such as calcium, aluminum or yttrium; lithium; and fluorine, the metal fluoride crystal containing 1.1 to 20 atoms per unit volume (atoms/nm3) of 6Li, having an effective atomic number of 10 to 40, containing a lanthanoid such as cerium, praseodymium or europium, and being represented by LiCaAlF6, LiSrAlF6, LiYF4, etc. [Selected Drawing] None.
L'invention porte sur un scintillateur pour la détection de neutrons qui a une sensibilité à un rayonnement de neutrons élevée et qui génère peu de bruits de fond provenant de rayons ?. L'invention porte sur un scintillateur pour la détection de neutrons comprenant des cristaux de fluorure de métal dont des exemples typiques sont LiCaAlF6, LiSrAlF6, LiYF4 ou similaire, qui comprennent, comme éléments constitutifs, un métal divalent ou de valence supérieure tel que le calcium, l'aluminium ou l'yttrium ; du lithium ; et du fluor, qui contiennent 1,1 à 20 atomes de 6Li par unité de volume (atome/nm3), qui ont un numéro atomique efficace de 10 à 40 et qui contiennent un lanthanide tel que le cérium, le praséodyme ou l'europium.
Fukuda Kentaro
Ishizu Sumito
Kawaguchi Noriaki
Suyama Toshihisa
Yanagida Takayuki
Smart & Biggar
Tohoku University
Tokuyama Corporation
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