Silicon surface barrier detector for fusion neutron spectroscopy
作者： T. Elevant , H. W. Hendel , E. B. Nieschmidt , L. E. Samuelson
DOI: 10.1063/1.1139174
关键词: Particle detector 、 Ion 、 Semiconductor detector 、 Full width at half maximum 、 Plasma diagnostics 、 Spectroscopy 、 Physics 、 Neutron spectroscopy 、 Atomic physics 、 Silicon
摘要: The usefulness of the intrinsic 28Si(n,α)25Mg and 28Si(n, p)28Al reactions in silicon surface barrier detectors for measurements ion temperatures D‐T fusion plasmas neutron flux has been investigated. For a 14‐MeV neutron‐generator narrow‐energy‐line source, energy resolution (∼1.5%), detection efficiency, useful count rates have determined. Based on these results, 100‐ms time bin, plasma from 2 to 6 keV can be determined full‐width half‐maximum (FWHM) neutron‐induced α spectral lines, with error estimated 25% 5%, respectively. maximum efficiency nominal 1500‐μm‐thick detector is ∼6×10−4.
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