Digital discrimination of neutrons and gamma-rays in a deuterated liquid scintillator using the Simplified Digital Charge Collection method

作者：Chen Xiaohui^*; Liu Rong; Zhu Tonghua; Lu Xinxin

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2012, 694: 11-15.

DOI：10.1016/j.nima.2012.08.016

• Neutron/gamma-ray discrimination
• The Simplified Digital Charge Collection
• Neutron to gamma-ray counts ratio
• BC537
• BC501A

The neutron/gamma-ray discrimination properties of a BC537 deuterated liquid scintillator in a mixed neutron/gamma-ray Am-Be source field are investigated with the help of an 8-bit resolution and 2 GSamples/s sampling frequency high-speed digitiser. The Simplified Digital Charge Collection (SDCC) method used for the analysis provides an improvement over the digital charge comparison (CC) method in terms of the Figure of Merit (FoM) values. The FoM and the neutron to gamma-ray counts ratio as functions of energy threshold are compared with those of a typical BC501A scintillator in the same mixed neutron/gamma-ray radiation field. The results confirm that the BC537 is to be preferred to BC501A for gamma-ray detection purposes.

• 出版日期2012-12-1
• 单位中国工程物理研究院核物理与化学研究所; 中国工程物理研究院