X-ray, γ-ray and neutron detector development for future space instrumentation

被引:12
作者
Hansson, Conny C. T. [1 ]
Owens, Alan [2 ]
v.d. Biezen, Johannes [3 ]
机构
[1] ESA ESTEC, Solar Syst Missions Div, Noordwijk, Netherlands
[2] ESA ESTEC, Off Support New Member States, Noordwijk, Netherlands
[3] ESA ESTEC, Sci Payload Instrument Sect, Noordwijk, Netherlands
关键词
Compound semiconductor detector; Scintillator detector; Solid state neutron detector; X-ray detectors; Gamma-ray detectors; Space instrumentation; CDZNTE;
D O I
10.1016/j.actaastro.2013.06.024
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
An overview of the material developments currently being pursued by the European Space Agency (ESA) with respect to X-ray, gamma-ray and neutron detection media is given. The benefits underlying the selection of specific materials are discussed. In the X-ray regime the basic microphysics behind degraded spectral performance caused by the polarization effect and Te inclusions, have been investigated. We have found that both effects degrade the spectra by producing a localised distortion of the electric field. The underlying cause for the distortion does however differ. For the gamma-ray regime, a low-noise equivalent scintillator to LaBr3 has been developed in the form of CeBr3. Three inch crystals with a FWHM energy resolution of 4.4% at 662 keV have successfully been produced. For neutron detection, a boron compound based solid state neutron detector has been developed that is sensitive to neutrons, alpha particles and 60 keV X-rays. The measured detection efficiency in detection for thermal neutrons was found to be in the order of a few per cent. (c) 2013 IAA. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:121 / 128
页数:8
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