Verification of Compton scattering spectrum of a 662keV photon beam scattered on a cylindrical steel target using MCNP5 code

Tran Thien Thanh; Vo Hoang Nguyen; Huynh Dinh Chuong; Le Bao Tran; Hoang Duc Tam; Nguyen Thi Binh; Chau Van Tao

doi:10.1016/j.apradiso.2015.09.005

Verification of Compton scattering spectrum of a 662keV photon beam scattered on a cylindrical steel target using MCNP5 code

Appl Radiat Isot. 2015 Nov:105:294-298. doi: 10.1016/j.apradiso.2015.09.005. Epub 2015 Sep 7.

Authors

Tran Thien Thanh¹, Vo Hoang Nguyen², Huynh Dinh Chuong³, Le Bao Tran³, Hoang Duc Tam⁴, Nguyen Thi Binh⁵, Chau Van Tao³

Affiliations

¹ Department of Nuclear Physics, Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam; Nuclear Technique Laboratory, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam. Electronic address: ttthanh@hcmus.edu.vn.
² Department of Nuclear Physics, Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam.
³ Department of Nuclear Physics, Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam; Nuclear Technique Laboratory, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam.
⁴ Department of Nuclear Physics, Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam; Faculty of Physics, Ho Chi Minh City University of Pedagogy, 280, An Duong Vuong Street, District 5, Ho Chi Minh City, Vietnam.
⁵ Faculty of Physics, Ho Chi Minh City University of Pedagogy, 280, An Duong Vuong Street, District 5, Ho Chi Minh City, Vietnam.

PMID: 26363240
DOI: 10.1016/j.apradiso.2015.09.005

Abstract

This article focuses on the possible application of a (137)Cs low-radioactive source (5mCi) and a NaI(Tl) detector for measuring the saturation thickness of solid cylindrical steel targets. In order to increase the reliability of the obtained experimental results and to verify the detector response function of Compton scattering spectrum, simulation using Monte Carlo N-particle (MCNP5) code is performed. The obtained results are in good agreement with the response functions of the simulation scattering and experimental scattering spectra. On the basis of such spectra, the saturation depth of a steel cylinder is determined by experiment and simulation at about 27mm using gamma energy of 662keV ((137)Cs) at a scattering angle of 120°. This study aims at measuring the diameter of solid cylindrical objects by gamma-scattering technique.

Keywords: Compton scattering; MCNP5; NaI(Tl); Non-destructive testing; Saturation thickness.