An analysis of energy deposition in a tissue equivalent proportional counter onboard the space shuttle

Citation
Jl. Shinn et al., An analysis of energy deposition in a tissue equivalent proportional counter onboard the space shuttle, RADIAT MEAS, 30(1), 1999, pp. 19-28
Citations number
42
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
RADIATION MEASUREMENTS
ISSN journal
1350-4487 → ACNP
Volume
30
Issue
1
Year of publication
1999
Pages
19 - 28
Database
ISI
SICI code
1350-4487(199902)30:1<19:AAOEDI>2.0.ZU;2-F
Abstract
An improved prediction for space radiations in the lower earth orbits measu red by the shuttle TEPC is obtained when energy loss straggling and chord l ength distribution of the detector are considered. A generalized analytic m odel is used to describe the energy deposition of direct ion interaction ev ents in a micron-size detector. The transport calculation accounting for th e shuttle configuration is accomplished by using a new version of HZETRN th at has been extensively verified with laboratory and flight data. The agree ment of predicted and measured lineal energy spectra is within 70% for the region above 2 keV/mu m but within a factor of 2.3 underpredicted for the r egion below this value. The inclusion of indirect delta ray events in the m odel is needed before possible causes for the underprediction below 2 keV/m u m can be assessed. (C) 1999 Elsevier Science Ltd. All rights reserved.