Title of article
Long-term radiation damage to a spaceborne germanium spectrometer
Author/Authors
Kurczynski، نويسنده , , P. and Pehl، نويسنده , , R.H and Hull، نويسنده , , E.L. and Palmer، نويسنده , , D. and Harris، نويسنده , , M.J. and Seifert، نويسنده , , H. and Teegarden، نويسنده , , B.J. and Gehrels، نويسنده , , N. and Cline، نويسنده , , T.L. and Ramaty، نويسنده , , R. and Sheppard، نويسنده , , D. and Madden، نويسنده , , N.W and Luke Babu، نويسنده , , P.N. and Cork، نويسنده , , C.P. and Landis، نويسنده , , D.A. and Malone، نويسنده , , D.، نويسنده ,
Pages
7
From page
141
To page
147
Abstract
The Transient Gamma-Ray Spectrometer aboard the Wind spacecraft in deep space has observed gamma-ray bursts and solar events for four years. The germanium detector in the instrument has gradually deteriorated from exposure to the ≈108 p/cm2/yr(>100 MeV) cosmic-ray flux. Low-energy tailing and loss of efficiency, attributed to hole trapping and conversion of the germanium from n- to p-type as a result of crystal damage, were observed. Raising the detector bias voltage ameliorated both difficulties and restored the spectrometer to working operation. Together, these observations extend our understanding of the effects of radiation damage to include the previously unsuccessfully studied regime of long-term operation in space.
Journal title
Astroparticle Physics
Record number
2009296
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