Inhibition of 137CS contamination in cesium iodide

被引：22

作者：

Kim, YD ^{[1
]}

Hahn, IS

Hwang, MJ

Jin, L

Kang, WG

Kim, HJ

Kim, SC

Kim, SK

Kim, SY

Kim, TY

Kwak, JW

Kwon, YJ

Lee, EK

Lee, HS

Lee, JI

Lee, JY

Lee, N

Myung, SS

Park, H

Schiedt, A

Yang, HY

Zhu, JJ

机构：

[1] Sejong Univ, Dept Phys, Seoul 143747, South Korea

[2] Ewha Womans Univ, Dept Sci Educ, Seoul 120750, South Korea

[3] Yonsei Univ, Dept Phys, Seoul 120749, South Korea

[4] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China

[5] Kyungpook Natl Univ, Dept Phys, Taegu 702701, South Korea

[6] Seoul Natl Univ, Sch Phys, Seoul 151742, South Korea

[7] Seoul Natl Univ, DMRC, Seoul 151742, South Korea

[8] Chemetall GmbH, Special Met Div, D-38685 Langelsheim, Germany

[9] Tsing Hua Univ, Dept Engn Phys, Beijing 100084, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2005年 / 552卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

dark matter; WIMP; CsI; radioactivity; HPGe; water; background; Cs-137;

D O I：

10.1016/j.nima.2005.06.080

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have extensively studied the mechanism of the Cs-137 and (CS)-C-134 contamination in CsI compounds. The nuclei Cs-137 and (CS)-C-134 in various samples have been studied using a HPGe detector at deep underground. The main source of the (CS)-C-137 contamination in CsI powder was water dissolved (CS)-C-137 used in the chemical process of cesium extraction at company side. We also found that (CS)-C-134 was produced mainly from Cs-133 by neutron capture. We have successfully produced CsI powder containing no more than 2 mBq/kg of Cs-137 by using only ultra-pure water for whole extraction process from raw ore (pollucite). (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：456 / 462

页数：7

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