Analysis of nuclear resonance fluorescence excitation measured with LaBr₃(Ce) detectors near 2 MeV

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• 作者：Mohamed Omer ; Hani Negm ; Hideaki Ohgaki ; Izuru Daito ; Takehito Hayakawa ; Mahmoud Bakr ; Heishun Zen ; Toshitada Hori ; Toshiteru Kii ; Kai Masuda ; Ryoichi Hajima ; Toshiyuki Shizuma ; Hiroyuki Toyokawa ; Nobuhiro Kikuzawa
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2013
• 出版时间：21 November, 2013
• 年：2013
• 卷：729
• 期：Complete
• 页码：102-107
• 全文大小：601 K

文摘

The performance of LaBr₃(Ce) to measure nuclear resonance fluorescence (NRF) excitations is discussed in terms of limits of detection and in comparison with high-purity germanium (HPGe) detectors near the 2 MeV region where many NRF excitation levels from special nuclear materials are located. The NRF experiment was performed at the High Intensity ¦Ã-ray Source (HI¦ÃS) facility. The incident ¦Ã-rays, of 2.12 MeV energy, hit a B₄C target to excite the ¹¹B nuclei to the first excitation level. The statistical-sensitive non-linear peak clipping (SNIP) algorithm was implemented to eliminate the background and enhance the limits of detection for the spectra measured with LaBr₃(Ce). Both detection and determination limits were deduced from the experimental data.