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Comparative study of the pulse shape discrimination (PSD) performance of pixelated stilbene and plastic scintillator (EJ-276) arrays for a coded-aperture-based hand-held dual-particle imager

정만희|부지환
한국원자력학회 (Korean Nuclear Society)|2023.05|Nuclear Engineering and Technology|제55권 제5호|pp. 1677-1686|DOI 10.1016/j.net.2023.01.011

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키워드

Pulse shape discriminationHand-heldCoded-aperture imagerPixelated stilbene scintillator arrayPixelated plastic scintillator array
주제분류원자력공학

초록

As the demand for the detection of special nuclear materials (SNMs) increases, the use of imaging instruments that can sensitively image both gamma-ray and neutron signatures has become necessary. This study compared the pulse shape discrimination (PSD) performance of gamma/neutron events when employing either a pixelated stilbene or a plastic (EJ-276) scintillator array coupled to a silicon photomultiplier (SiPM) array in a dual-particle imager. The stilbene array allowed a lower energy threshold above which neutron and gamma-ray events can be clearly distinguished. A greater number of events can, therefore, be used when forming both gamma-ray and neutron images, which shortens the time required to acquire the images by nearly seven times

Abstract

As the demand for the detection of special nuclear materials (SNMs) increases, the use of imaging instruments that can sensitively image both gamma-ray and neutron signatures has become necessary. This study compared the pulse shape discrimination (PSD) performance of gamma/neutron events when employing either a pixelated stilbene or a plastic (EJ-276) scintillator array coupled to a silicon photomultiplier (SiPM) array in a dual-particle imager. The stilbene array allowed a lower energy threshold above which neutron and gamma-ray events can be clearly distinguished. A greater number of events can, therefore, be used when forming both gamma-ray and neutron images, which shortens the time required to acquire the images by nearly seven times

참고문헌 (25)

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