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https://hdl.handle.net/10316/12893
Title: | Application of the microhole and strip plate detector for neutron detection | Authors: | Veloso, J. F. C. A. Amaro, F. Santos, J. M. F. dos Mir, J. A. Derbyshire, G. E. Stephenson, R. Rhodes, N. J. Schooneveld, E. M. |
Issue Date: | Oct-2004 | Publisher: | IEEE | Citation: | IEEE Transactions on Nuclear Science 51:5 (2004) 2104-2109 | Abstract: | We introduce the microhole and strip plate (MHSP) detector as a micropattern detector for the detection of thermal and epithermal neutrons. Detection sensitivity is obtained by filling these detectors with 3He at high pressures. We propose the use of argon-xenon penning mixtures as the stopping gas as opposed to the usual carbon based stopping gases. These argon-xenon mixtures provide suitable gas gains for the high pressure/high resolution neutron detector applications. With these mixtures it is possible to obtain a sealed detector with only rare-gas filling which is simple to purify and not subject to ageing. An MHSP gas detector filled with a 3-bar argon/50-mbar xenon/6-bar helium mixture can achieve gains above 2×103. This mixture allows neutron detection efficiencies of about 70% at 1 Å for a 2.5-cm thick absorption region and intrinsic position resolution (full-width at half-maximum) of about 1.8 mm. The sensitivity to γ-rays of the present mixture will be the same when compared to that of 2.6-bar CF4 | URI: | https://hdl.handle.net/10316/12893 | ISSN: | 0018-9499 | DOI: | 10.1109/TNS.2004.835620 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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Application of the microhole.pdf | 296.22 kB | Adobe PDF | View/Open |
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