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

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2013-11, Vol.729, p.102-107
• Main Authors: Omer, Mohamed, Negm, Hani, Ohgaki, Hideaki, Daito, Izuru, Hayakawa, Takehito, Bakr, Mahmoud, Zen, Heishun, Hori, Toshitada, Kii, Toshiteru, Masuda, Kai, Hajima, Ryoichi, Shizuma, Toshiyuki, Toyokawa, Hiroyuki, Kikuzawa, Nobuhiro
• Format: Article
• Language: English
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2013.06.083

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 2MeV region where many NRF excitation levels from special nuclear materials are located. The NRF experiment was performed at the High Intensity γ-ray Source (HIγS) facility. The incident γ-rays, of 2.12MeV 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.