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 10 MeV 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.
| Original language | English |
|---|---|
| Article number | 043H01 |
| Journal | Progress of Theoretical and Experimental Physics |
| Volume | 2018 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 1 2018 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Separation of gamma-ray and neutron events with CsI(Tl) pulse shape analysis. / Ashida, Y.; Nagata, H.; Koshio, Yusuke; Nakaya, T.; Wendell, R.
In: Progress of Theoretical and Experimental Physics, Vol. 2018, No. 4, 043H01, 01.04.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Separation of gamma-ray and neutron events with CsI(Tl) pulse shape analysis
AU - Ashida, Y.
AU - Nagata, H.
AU - Koshio, Yusuke
AU - Nakaya, T.
AU - Wendell, R.
PY - 2018/4/1
Y1 - 2018/4/1
N2 - 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 10 MeV 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.
AB - 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 10 MeV 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.
UR - http://www.scopus.com/inward/record.url?scp=85062269642&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062269642&partnerID=8YFLogxK
U2 - 10.1093/ptep/pty040
DO - 10.1093/ptep/pty040
M3 - Article
AN - SCOPUS:85062269642
VL - 2018
JO - Progress of Theoretical and Experimental Physics
JF - Progress of Theoretical and Experimental Physics
SN - 2050-3911
IS - 4
M1 - 043H01
ER -