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Radiation model predictions and validation using LDEF dataRadiation dosimetry aboard LDEF, as well as post-flight measurements of the radioactivity induced in numerous LDEF spacecraft components, provide unique data for evaluating the accuracy of current models for predicting both the space radiation environments (trapped proton intensity, spectra, and directionality; cosmic ray fluence) and the radiation environments induced in spacecraft components (fluence, energy spectra, secondary particle, linear energy transfer, etc.). By determining the accuracy of such models using LDEF data, and with model updates where required, improved radiation environment predictions can be made for future missions, which in turn allows improved predictions for specific radiation effects for future spacecraft components (single event upsets of microelectronics, radiation damage to focal plane arrays, noise in sensitive instrumentation, etc.). Herein, the status and results from radiation model predictions and comparisons with LDEF data is given. The calculations are made using radiation transport codes coupled with a 3-D geometry/mass model of LDEF, together with current models of the space radiation environment.
Document ID
19920017994
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Armstrong, T. W.
(Science Applications International Corp. Prospect, TN, United States)
Colborn, B. L.
(Science Applications International Corp. Prospect, TN, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1992
Publication Information
Publication: NASA. Langley Research Center, Second LDEF Post-Retrieval Symposium Abstracts
Subject Category
Atomic And Molecular Physics
Accession Number
92N27237
Funding Number(s)
CONTRACT_GRANT: NAS8-38566
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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