Multiple scattering Compton camera with neutron activation for material inspection

Taewoong Lee, Won Ho Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We designed a multiple scattering Compton camera (MSCC) based on a lanthanum bromide (LaBr<inf>3</inf>:Ce) scintillator to detect neutron-activated prompt gamma-rays for material inspection. The system parameters such as detector thickness and inter-detector distances were optimized on the basis of figure of merit (FOM). The FOM was maximized when the inter-detector distance and detector thickness were 18 cm and 1.5 cm, respectively. Under the optimized conditions, energy spectra and spatial images were obtained to identify various substances, and the results matched well with theoretical data. The probability of multiple Compton scattering was higher than that of conventional Compton scattering at high energies (~MeV), which proved the effectiveness of MSCC to detect prompt gamma-rays. Simulations with realistic conditions showed the feasibility of using the MSCC investigate of materials in field applications.

Original languageEnglish
Pages (from-to)423-429
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume784
DOIs
Publication statusPublished - 2015 Jun 1

Fingerprint

Multiple scattering
inspection
Neutrons
Inspection
Chemical activation
Cameras
cameras
activation
Detectors
Compton scattering
neutrons
scattering
Gamma rays
detectors
figure of merit
gamma rays
Lanthanum
Phosphors
lanthanum
scintillation counters

Keywords

  • Lanthanum bromide (LaBr<inf>3</inf>:Ce)
  • Multiple scattering Compton camera (MSCC)
  • Neutron-activated prompt gamma-ray

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

Cite this

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title = "Multiple scattering Compton camera with neutron activation for material inspection",
abstract = "We designed a multiple scattering Compton camera (MSCC) based on a lanthanum bromide (LaBr3:Ce) scintillator to detect neutron-activated prompt gamma-rays for material inspection. The system parameters such as detector thickness and inter-detector distances were optimized on the basis of figure of merit (FOM). The FOM was maximized when the inter-detector distance and detector thickness were 18 cm and 1.5 cm, respectively. Under the optimized conditions, energy spectra and spatial images were obtained to identify various substances, and the results matched well with theoretical data. The probability of multiple Compton scattering was higher than that of conventional Compton scattering at high energies (~MeV), which proved the effectiveness of MSCC to detect prompt gamma-rays. Simulations with realistic conditions showed the feasibility of using the MSCC investigate of materials in field applications.",
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TY - JOUR

T1 - Multiple scattering Compton camera with neutron activation for material inspection

AU - Lee, Taewoong

AU - Lee, Won Ho

PY - 2015/6/1

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AB - We designed a multiple scattering Compton camera (MSCC) based on a lanthanum bromide (LaBr3:Ce) scintillator to detect neutron-activated prompt gamma-rays for material inspection. The system parameters such as detector thickness and inter-detector distances were optimized on the basis of figure of merit (FOM). The FOM was maximized when the inter-detector distance and detector thickness were 18 cm and 1.5 cm, respectively. Under the optimized conditions, energy spectra and spatial images were obtained to identify various substances, and the results matched well with theoretical data. The probability of multiple Compton scattering was higher than that of conventional Compton scattering at high energies (~MeV), which proved the effectiveness of MSCC to detect prompt gamma-rays. Simulations with realistic conditions showed the feasibility of using the MSCC investigate of materials in field applications.

KW - Lanthanum bromide (LaBr<inf>3</inf>:Ce)

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KW - Neutron-activated prompt gamma-ray

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