Neutron/γ-ray digital pulse shape discrimination with organic scintillators

被引：79

作者：

Kaschuck, Y

Esposito, B ^{[1
]}

机构：

[1] CR Frascati, Assoc Euratom ENEA Fus, I-00044 Frascati, Italy

[2] TRINITI, Troitsk, Moscow Region, Russia

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2005年 / 551卷 / 2-3期

关键词：

digital; identification; scintillators;

D O I：

10.1016/j.nima.2005.05.071

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Neutrons and gamma-rays produce light pulses with different shapes when interacting with organic scintillators. This property is commonly used to distinguish between neutrons (n) and gamma-rays (gamma) in mixed n/gamma fields as those encountered in radiation physics experiments. Although analog electronic pulse shape discrimination (PSD) modules have been successfully used for many years, they do not allow data reprocessing and are limited in count rate capability (typically up to 200 kHz). The performance of a n/gamma digital pulse shape discrimination (DPSD) system by means of a commercial 12-bit 200 MSamples/s transient recorder card is investigated here. Three organic scintillators have been studied: stilbene, NE213 and anthracene. The charge comparison method has been used to obtain simultaneous n/gamma discrimination and pulse height analysis. The importance of DPSD for high-intensity radiation field measurements and its advantages with respect to analog PSD are discussed. Based on post-experiment simulations with acquired data, the requirements for fast digitizers to provide DPSD with organic scintillators are also analyzed. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：420 / 428

页数：9

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