Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (2): 20403-020403.doi: 10.11889/j.0253-3219.2017.hjs.40.020403


Develop an instrument for fast measuring internal radiation contamination of large crowds

CHEN Wei1,2, ZHOU Jianbin1, FANG Fang1, HONG Xu1, LIN Ye1, YU Jie1, ZHOU Wei1, MA Yingjie1   

  1. 1. College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China;
    2. College of Information Engineering, Chengdu Aeronautic Polytechnic, Chengdu 610100, China
  • Received:2016-11-01 Revised:2016-12-13 Online:2017-02-10 Published:2017-01-24
  • Supported by:

    Supported by the National Key Scientific Instrument and Equipment Development Project (No.2012YQ180118), National Natural Science Foundation of China (No.11475036, No.11675028)


Background: It is necessary to detect internal contamination when nuclear emergency events happened. Purpose: This study aims to develop an instrument to fast detect internal radiation contamination of large crowds. Methods: An integrated machine capable of simultaneous detection of α and γ radiation was developed. Based on the digital energy spectrum processing technology, α-ray from nose swab is detected by using planar implanted passivated silicon (PIPS) whilst the NaI(Tl) detector is equipped to measure the γ-ray which deposits in lung of human body. Results: The experimental testing results show that the energy resolution of the instrument is 6.1% for 239Pu and 6.9% for 137Cs. The processing speed is no less than 10 persons per hour. Conclusion: Detection speed and the energy resolution of proposed instrument satisfy the requirement of fast measuring internal radiation contamination of large crowds. It can provide reliable evidence for subsequent diagnosis.

Key words: Internal contamination, α-ray detection, γ-ray detection, Fast detection, Large crowds

CLC Number: 

  • TL817+.2