Ultra-thin 3D silicon sensors for neutron detection

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Guardiola , C , Fleta , C , Pellegrini , G , Garcia , F , Quirion , D , Rodriguez , J & Lozano , M 2012 , ' Ultra-thin 3D silicon sensors for neutron detection ' Journal of Instrumentation , vol 7 , pp. P03006 . DOI: 10.1088/1748-0221/7/03/P03006

Title: Ultra-thin 3D silicon sensors for neutron detection
Author: Guardiola, Consuelo; Fleta, Celeste; Pellegrini, Giulio; Garcia, Francisco; Quirion, David; Rodriguez, Joaquin; Lozano, Manuel
Contributor: University of Helsinki, Helsinki Institute of Physics
Belongs to series: Journal of Instrumentation
ISSN: 1748-0221
Abstract: We present a novel neutron detector based on an ultra-thin 3D silicon sensor with a sensitive volume only 10 µm thick. This ultra-thin active volume allows a high gamma-ray rejection, a key requirement in order to discriminate the signal coming from the neutrons in a mixed neutron-gamma ray environment. The device upper-side is covered with a novel boron-based compound that detects neutrons by means of the 10B(n,α)7Li nuclear reaction. The performance of test devices has been investigated first with a gamma-ray source to evaluate the gamma-ray rejection factor, and then with an 241AmBe neutron source to assess the neutron-gamma ray discrimination properties.
URI: http://hdl.handle.net/10138/32409
Date: 2012-03-15
Subject: 114 Physical sciences

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