Experimental determination of gamma-ray discrimination in pillar-structured thermal neutron detectors under high gamma-ray flux

Experimental determination of gamma-ray discrimination in pillar-structured thermal neutron detectors under high gamma-ray flux

In this paper, we demonstrate a detector that has a high neutron-to-gamma discrimination of 8.5×105 with a high thermal neutron detection efficiency of 39% when exposed to a high gamma-ray field of 109 photons/cm2s. The detector is based on a silicon pillar structure filled with a neutron converter...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2015-11, Vol.799 (C), p.203-206
Hauptverfasser: Shao, Qinghui, Conway, Adam M., Voss, Lars F., Radev, Radoslav P., Nikolić, Rebecca J., Dar, Mushtaq A., Cheung, Chin L.
Format: Artikel
Sprache:eng
Schlagworte:
Boron
Gamma-ray discrimination
GENERAL STUDIES OF NUCLEAR REACTORS
Silicon pillar
Thermal neutron detector
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:In this paper, we demonstrate a detector that has a high neutron-to-gamma discrimination of 8.5×105 with a high thermal neutron detection efficiency of 39% when exposed to a high gamma-ray field of 109 photons/cm2s. The detector is based on a silicon pillar structure filled with a neutron converter material (10B) designed to have high thermal neutron detection efficiency. The pillar dimensions are 50µm pillar height, 2µm pillar diameter and 2µm spacing between adjacent pillars.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2015.07.045