Evaluation of ZnS-family phosphors for neutron detectors using photon counting method

被引：23

作者：

Kubota, N

Katagiri, M

Kamijo, K

Nanto, H ^{[1
]}

机构：

[1] Kanazawa Inst Technol, Adv Mat Sci Res & Dev Ctr, Dept Mat Sci & Engn, Ishikawa 9240838, Japan

[2] Tokai Res Corp, Japan Atom Energy Res Inst, Ibaraki, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 529卷 / 1-3期

关键词：

neutron detector; ZnS family phosphor; zinc oxide; lifetime; photon counting method;

D O I：

10.1016/j.nima.2004.05.004

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A neutron detection sheet composed of ZnS:Ag as phosphor and (LiF)-Li-6 as neutron converter has been conventionally used for neutron detectors including imaging detectors because of its larger luminescence rate for a ray and shorter lifetime. However, the week point of ZnS:Ag phosphor is the slow component of the lifetime. Thus, we began to investigate other ZnS-family phosphors without the slow component of lifetime for neutron detectors using the photon counting method which needs a smaller number of photons of one order of magnitude. In this study, ZnO:Zn, ZnO:Ga, ZnSSe:Ag phosphor ceramics without the slow component of lifetime has been tried to fabricate using an electric furnace or a Spark Plasma Sintering (SPS) apparatus to appropriate for neutron detectors under high counting rates. The ZnO:Zn fabricated by means of the SPS method had the fastest lifetime of 4 ns though its detection efficiency was to be one-eighths as compared with a standard ZnS:Ag/(LiF)-Li-6 detection sheet. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：321 / 324

页数：4

共 3 条

[1] High-position-resolution scintillation neutron-imaging detector by crossed-fiber readout with novel centroid-finding method [J].