Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556
Quick Search Year Search
Advanced Search

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (2): 28 doi: 10.1007/s41365-018-0363-7

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

A modified multi-group model of angular and momentum distribution of cosmic-ray muons for thickness measurement and material discrimination of slabs

Sa Xiao 1, Wei-Bo He 1, Ming-Cong Lan 1, Ying Chen1, Mao-Bing Shuai 1,2   

  1. 1 Institute of Materials, China Academy of Engineering Physics, Jiangyou 621907, China
    2 Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621900, China
  • Contact: Mao-Bing Shuai E-mail:shuaimaobing@caep.cn
  • Supported by:

    This work was supported by the Science and Technology Development Foundation of CAEP (No. 2015B0103014) and the National Natural Science Foundation of China (No. 11605163).

PDF ShareIt Export Citation
Sa Xiao, Wei-Bo He, Ming-Cong Lan, Ying Chen, Mao-Bing Shuai. A modified multi-group model of angular and momentum distribution of cosmic-ray muons for thickness measurement and material discrimination of slabs.Nuclear Science and Techniques, 2018, 29(2): 28     doi: 10.1007/s41365-018-0363-7

Abstract:

Muon tomography is a capable imaging technique to measure the geometry of high-Z objects. However, most existed algorithms used in muon tomography have obscured the effects of angular distribution and momentum spectra of cosmic ray muons and reduced the spatial resolution. We present a modified multi-group model that takes into account these effects and calibrates the model by the material of lead. Performance tests establish that the model is capable of measuring the thickness of a Pb slab and identifying the material of an unknown slab on a reasonable exposure timescale, in both cases of complete and incomplete angular data. Results show that the modified multi-group model is helpful for improvements in image resolution in real applications.

Key words: Muon tomography, Modified multi-group model, Angular distribution, Momentum spectra

Address: Editorial Office of NST, 2019 Jialuo Road, Jiading, Shanghai 201800, China

E-mail: nst@sinap.ac.cn

Website: www.j.sinap.ac.cn/nst