TY - JOUR
T1 - Performance of a virtual frisch-grid CdZnTe detector for prompt γ-ray induced by 14 MeV neutrons
T2 - Monte Carlo simulation study
AU - Lee, Taewoong
AU - Kim, Younghak
AU - Jo, Ajin
AU - Kim, Jongguk
AU - Lee, W.
N1 - Funding Information:
This study was supported by the grant of the Korea Institute of Radiological and Medical Science (KIRAMS) , funded by the Ministry of Science and ICT (MSIT) (No. 1711045543 ; 1711045540 / 50462-2019 ), and the Nuclear Safety Research Program through the Korea Foundation of Nuclear Safety (KoFONS) granted the financial resource from the Nuclear Safety and Security Commission (NSSC) (No. 1903006 ), Republic of Korea.
Publisher Copyright:
© 2019
PY - 2019/11
Y1 - 2019/11
N2 - The performance of a virtual (6 × 6 × 15 mm3) Frisch-grid cadmium zinc telluride detector for the detection of contraband with 14 MeV neutron-activation prompt γ-rays was studied using Monte Carlo simulations. A sensitive nonlinear iterative peak clipping algorithm was applied to the spectra to rapidly and easily identify the prompt γ-ray peaks. This algorithm showed better performance than directly using the original spectra. The CZT detector showed good energy resolution for the high energy prompt γ-rays and its carbon-to-oxygen peak ratios were almost equal to the theoretical value of the target contraband materials. The minimum detectable concentration of carbon and oxygen elements using the CZT detector was calculated. The simulation results for the CZT detector were compared to those of a HPGe detector and demonstrated the feasibility of using a CZT detector in neutron activation analysis.
AB - The performance of a virtual (6 × 6 × 15 mm3) Frisch-grid cadmium zinc telluride detector for the detection of contraband with 14 MeV neutron-activation prompt γ-rays was studied using Monte Carlo simulations. A sensitive nonlinear iterative peak clipping algorithm was applied to the spectra to rapidly and easily identify the prompt γ-ray peaks. This algorithm showed better performance than directly using the original spectra. The CZT detector showed good energy resolution for the high energy prompt γ-rays and its carbon-to-oxygen peak ratios were almost equal to the theoretical value of the target contraband materials. The minimum detectable concentration of carbon and oxygen elements using the CZT detector was calculated. The simulation results for the CZT detector were compared to those of a HPGe detector and demonstrated the feasibility of using a CZT detector in neutron activation analysis.
KW - Detection of contraband materials
KW - Minimum detectable concentration (MDC)
KW - Prompt γ-ray neutron activation analysis (PGNAA)
KW - Sensitive nonlinear iterative peak clipping algorithm (SNIP)
KW - Virtual frisch-grid cadmium zinc telluride (CZT)
UR - http://www.scopus.com/inward/record.url?scp=85069593525&partnerID=8YFLogxK
U2 - 10.1016/j.apradiso.2019.108818
DO - 10.1016/j.apradiso.2019.108818
M3 - Article
C2 - 31344648
AN - SCOPUS:85069593525
SN - 0969-8043
VL - 153
JO - Applied Radiation and Isotopes
JF - Applied Radiation and Isotopes
M1 - 108818
ER -