Characteristics of Boron-Loaded Plastic Scintillators for Neutron Measurements
J. Korean Phy. Soc. 2007; 50: 1482~1488
Published online May 15, 2007 © 2007 The Korean Physical Society.

Abstract
In this paper, we report investigations of the detector characteristics for boron-loaded plastic scintillators for neutron measurements. The detectors were tested with fast neutrons emitted from fission decays of a 5-$mu$Ci $^{252}$Cf source and with slow neutrons provided by the MC50 cyclotron at the Korea Institute of Radiological and Medical Science. The energy spectrum of the fast neutrons was obtained by applying a time-of-flight method to the coincident measurement of neutrons and gamma rays emitted from fission decays. The detectors were also tested to perform a pulse-timing analysis for fast neutrons, slow neutrons, and gammas to understand the scope of the discrimination for gamma rays when the detector is applied to practical measurements.
Keywords: Boron-loaded plastic scintillator, Neutrons, GEANT simulation, Time-of-flight measurement


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