Production of low radioactivity CsI(Tl) crystals for WIMP searches

Y. D. Kim, I. S. Hahn, M. J. Hwang, Li Jin, W. G. Kang, H. J. Kim, S. C. Kim, S. K. Kim, S. Y. Kim, T. Y. Kim, J. W. Kwak, Y. J. Kwon, E. K. Lee, H. S. Lee, J. I. Lee, J. Y. Lee, M. J. Lee, S. S. Myung, H. Park, Alexander SchiedtH. Y. Yang, J. J. Zhu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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

Original languageEnglish
Title of host publicationTOPICAL WORKSHOP ON LOW RADIOACTIVITY TECHNIQUES
Subtitle of host publicationLRT 2004
Pages93-99
Number of pages7
DOIs
Publication statusPublished - 2005 Sep 8
EventTOPICAL WORKSHOP ON LOW RADIOACTIVITY TECHNIQUES: LRT 2004 - Sudbury, Ontario, Canada
Duration: 2004 Dec 122004 Dec 14

Publication series

NameAIP Conference Proceedings
Volume785
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherTOPICAL WORKSHOP ON LOW RADIOACTIVITY TECHNIQUES: LRT 2004
CountryCanada
CitySudbury, Ontario
Period04/12/1204/12/14

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Kim, Y. D., Hahn, I. S., Hwang, M. J., Jin, L., Kang, W. G., Kim, H. J., Kim, S. C., Kim, S. K., Kim, S. Y., Kim, T. Y., Kwak, J. W., Kwon, Y. J., Lee, E. K., Lee, H. S., Lee, J. I., Lee, J. Y., Lee, M. J., Myung, S. S., Park, H., ... Zhu, J. J. (2005). Production of low radioactivity CsI(Tl) crystals for WIMP searches. In TOPICAL WORKSHOP ON LOW RADIOACTIVITY TECHNIQUES: LRT 2004 (pp. 93-99). (AIP Conference Proceedings; Vol. 785). https://doi.org/10.1063/1.2060458