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Detectors of fast neutrons based on semi-insulating GaAs with neutron converter layers

✍ Scribed by Andrea Šagátová-Perd’ochová; František Dubecký; Bohumír Zaťko; Ivan Chodák; Milan Ladzianský; Vladimír Nečas

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
250 KB
Volume
576
Category
Article
ISSN
0168-9002

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✦ Synopsis

Neutron transmission imaging is recently finding still larger variety of applications. The development of reliable neutron-detecting device is essential for the high-quality imaging. However, such neutron imaging detectors have been prepared usually based on CCD cameras. Recently, first semiconductor detectors with neutron converter layers are beginning to appear. GaAs-based structures are presently under investigation as the substrate for neutron converter layer coated detectors of fast neutrons. Two new neutron converter layers (primer & rubber based), similar to HDPE (high-density polyethylene) were designed, prepared and tested via 239 PuBe radioisotope neutron source.

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Performance study of radiation detectors
Performance study of radiation detectors based on semi-insulating GaAs with P+ homo- and heterojunction blocking electrode
✍ František Dubecký; Eduard Hulicius; Paola Frigeri; Andrea Perd’ochová-Šagátová; 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 185 KB

A preliminary study of technology and performance of radiation detectors based on bulk semi-insulating (SI) GaAs with P + blocking electrodes is presented. Detectors with blocking electrode system formed either by P + (GaAs)/N-(SI GaAs) homojunction or P + (Al 0.3 Ga 0.7 As)/N-(SI GaAs) heterojuncti