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VNUHCM Journal of

Science and Technology Development

An official journal of Viet Nam National University Ho Chi Minh City, Viet Nam since 1997

ISSN: 1859-0128
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STUDY ON THE EFFECT OF NATURAL BACKGROUND FOR GAMMA SPECTROMETER SYSTEM

Thanh Thien Tran 1, *
Tao Van Chau 1
Tam Duc Hoang 2
Yen Thi Hong Vo 3

  1. University of Science, VNU-HCM
  2. Ho Chi Minh City University of Pedagogy
  3. Can Tho University
Correspondence to: Thanh Thien Tran, University of Science, VNU-HCM. Email: pvphuc@hcmuns.edu.vn.
Volume & Issue: Vol. 14 No. 4 (2011) | Page No.: 16-23 | DOI: 10.32508/stdj.v14i4.2032
Published: 2011-12-30

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Copyright © 2011 by the author(s).

Copyright The Author(s) 2023. This article is published with open access by Vietnam National University, Ho Chi Minh city, Vietnam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. 

Abstract

In the analysis of environmental radioactive isotopes using gamma spectrometry, natural background radiation is an important parameter related to the analytical results directly. Therefore, in this work, the influence of natural background radiation was studied for two models: with and without shielding of gamma spectrometer system. The initial results showed that the minimum detectable activity (MDA) of radionuclides such as 234Th, 226Ra, 212Pb, 208Tl, 40K, 214Pb, 214Bi, 228Ac have the difference of two models from 10% to 503%. This is the basis for researches to improve the lead shielding chamber in the future.

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