Performance of a virtual frisch-grid CdZnTe detector for prompt γ-ray induced by 14 MeV neutrons: Monte Carlo simulation study

Taewoong Lee; Younghak Kim; Ajin Jo; Jongguk Kim; W. Lee

doi:10.1016/j.apradiso.2019.108818

Performance of a virtual frisch-grid CdZnTe detector for prompt γ-ray induced by 14 MeV neutrons: Monte Carlo simulation study

Taewoong Lee, Younghak Kim, Ajin Jo, Jongguk Kim, W. Lee

School of Health and Environmental Science

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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.

Original language	English
Article number	108818
Journal	Applied Radiation and Isotopes
Volume	153
DOIs	https://doi.org/10.1016/j.apradiso.2019.108818
Publication status	Published - 2019 Nov

Bibliographical note

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

Keywords

Detection of contraband materials
Minimum detectable concentration (MDC)
Prompt γ-ray neutron activation analysis (PGNAA)
Sensitive nonlinear iterative peak clipping algorithm (SNIP)
Virtual frisch-grid cadmium zinc telluride (CZT)

ASJC Scopus subject areas

Radiation

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10.1016/j.apradiso.2019.108818

Cite this

@article{ebb804ebec4043b8a4f7455aaaa712bb,

title = "Performance of a virtual frisch-grid CdZnTe detector for prompt γ-ray induced by 14 MeV neutrons: Monte Carlo simulation study",

abstract = "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.",

keywords = "Detection of contraband materials, Minimum detectable concentration (MDC), Prompt γ-ray neutron activation analysis (PGNAA), Sensitive nonlinear iterative peak clipping algorithm (SNIP), Virtual frisch-grid cadmium zinc telluride (CZT)",

author = "Taewoong Lee and Younghak Kim and Ajin Jo and Jongguk Kim and W. Lee",

note = "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: {\textcopyright} 2019",

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month = nov,

doi = "10.1016/j.apradiso.2019.108818",

language = "English",

volume = "153",

journal = "Applied Radiation and Isotopes",

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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

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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)

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ER -

Performance of a virtual frisch-grid CdZnTe detector for prompt γ-ray induced by 14 MeV neutrons: Monte Carlo simulation study

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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Cite this

Performance of a virtual frisch-grid CdZnTe detector for prompt γ-ray induced by 14 MeV neutrons: Monte Carlo simulation study

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this

Performance of a virtual frisch-grid CdZnTe detector for prompt γ-ray induced by 14 MeV neutrons: Monte Carlo simulation study