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- Title
Separation of gamma-ray and neutron events with CsI(Tl) pulse shape analysis.
- Authors
Ashida, Y; Nagata, H; Koshio, Y; Nakaya, T; Wendell, R
- Abstract
Fast neutrons are a large background to measurements of gamma-rays emitted from excited nuclei, such that detectors that can efficiently distinguish between the two are essential. In this paper we describe the separation of gamma-rays from neutrons with the pulse shape information of the CsI(Tl) scintillator, using a fast neutron beam and several gamma-ray sources. We find that a figure of merit optimized for this separation takes on large and stable values (nearly 4) between 5 and 10MeV of electron equivalent deposited energy, the region of most interest to the study of nuclear de-excitation gamma-rays. Accordingly, this work demonstrates the ability of CsI(Tl) scintillators to reject neutron backgrounds to gamma-ray measurements at these energies.
- Publication
Progress of Theoretical & Experimental Physics: PTEP, 2018, Vol 2018, Issue 4, p1
- ISSN
2050-3911
- Publication type
Article
- DOI
10.1093/ptep/pty040