A Wavelet Packet Transform Inspired Method of Neutron-Gamma Discrimination

Author

Shippen, David I. ; Joyce, Malcolm J. ; Aspinall, Michael D.

Author_Institution

Eng. Dept., Lancaster Univ., Lancaster, UK

Volume

57

Issue

5

fYear

2010

Firstpage

2617

Lastpage

2624

Abstract

A Simplified Digital Charge Collection (SDCC) method of discrimination between neutron and gamma pulses in an organic scintillator is presented and compared to the Pulse Gradient Analysis (PGA) discrimination method. Data used in this research were gathered from events arising from the ⁷Li(p,n)⁷Be reaction detected by an EJ-301 organic liquid scintillator recorded with a fast digital oscilloscope. Time-of-Flight (TOF) data were also recorded and used as a second means of identification. The SDCC method is found to improve on the figure of merit (FOM) given by PGA method at the equivalent sampling rate.

Keywords

gamma-ray detection; liquid scintillation detectors; neutron detection; nuclear electronics; wavelet transforms; ⁷Li(p,n)⁷Be; EJ-301 organic liquid scintillator; fast digital oscilloscope; gamma pulse; neutron pulse; neutron-gamma discrimination; pulse gradient analysis discrimination method; sampling rate; simplified digital collection method; time-of-flight data; wavelet packet transform inspired method; Approximation methods; Electronics packaging; Neutrons; Signal resolution; Time frequency analysis; Wavelet transforms; Digital; liquid scintillators; pulse-shape discrimination; time of flight;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2010.2044190

Filename

5603557