Improved spectrometric characteristics of thallium bromide nuclear radiation detectors

被引：103

作者：

Hitomi, K ^{[1
]}

Murayama, T ^{[1
]}

Shoji, T ^{[1
]}

Suehiro, T ^{[1
]}

Hiratate, Y ^{[1
]}

机构：

[1] Tohoku Inst Technol, Dept Elect, Taihaku Ku, Sendai, Miyagi 9828577, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1999年 / 428卷 / 2-3期

关键词：

thallium bromide; many pass zone refining; travelling molten zone method; mu tau product; energy required to create an electron-hole pair; Klein relationship;

D O I：

10.1016/S0168-9002(99)00141-2

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Thallium bromide (TlBr) is a compound semiconductor with a high atomic number and wide band gap. In this study, nuclear radiation detectors have been fabricated from the TlBr crystals. The TlBr crystals were grown by the horizontal travelling molten zone (TMZ) method using the materials purified by many pass zone refining. The crystals were characterized by measuring the resistivity, the mobility-lifetime (mu tau) product and the energy required to create an electron-hole pair (the epsilon value). Improved energy resolution has been obtained by the TlBr radiation detectors. At room temperature the full-width at half-maximum (FWHM) for the 59.5, 122 and 662 keV gamma-ray photo peak obtained from the detectors were 3.3, 8.8 and 29.5 keV, respectively. By comparing the saturated peak position of the TlBr detector with that of the CdTe detector, the epsilon value has been estimated to be about 5.85 eV for the TlBr crystal. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：372 / 378

页数：7

共 16 条

[1] APPLICATION OF HIGH-RESOLUTION SEMICONDUCTOR DETECTORS IN X-RAY EMISSION SPECTROGRAPHY [J].