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The low earth orbit radiation environment and its evolution from measurements using the CREAM and CREDO experiments

Conference · · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)
OSTI ID:6907992
; ;  [1];  [2];  [3]
  1. Defense Research Agency, Farnborough, Hampshire (United Kingdom). Space and Communications Dept.
  2. AEA Technology, Oxfordshire (United Kingdom). Harwell Instruments
  3. Univ. of Surrey, Guildford (United Kingdom). Surrey Satellite Technology
+ Show Author Affiliations

Data obtained from Cosmic Radiation Environment Monitors carried on Shuttle missions during 1991/92, as well as on the polar orbiting microsatellite UOSAT-3 since April 1990, show the long term trends in the cosmic-ray and trapped proton environments responsible for single event phenomena. Cosmic-ray fluxes have increased by a factor of two since June 1991, while the solar flare event of Much 1991 created an additional region of trapped radiation which intersects high inclination Shuttle and polar orbits and, although decaying, was still present in December 1992. Deployment at a variety of shielding depths on Shuttle enables the influence of shielding to be explored and shows the influence of secondaries.

OSTI ID:
6907992
Report Number(s):
CONF-930704--
Journal Information:
IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 40:6Pt1; ISSN 0018-9499; ISSN IETNAE
Country of Publication:
United States
Language:
English

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Related Subjects

440200* -- Radiation Effects on Instrument Components
Instruments
or Electronic Systems
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
661320 -- Auroral
Ionospheric
& Magnetospheric Phenomena-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIRCRAFT
BARYONS
COSMIC RAY FLUX
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
ELECTRONIC CIRCUITS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
MICROELECTRONIC CIRCUITS
MONITORING
NUCLEONS
PHYSICAL RADIATION EFFECTS
PROTONS
RADIATION EFFECTS
RADIATION FLUX
SPACE FLIGHT
SPACE SHUTTLES
SPACE VEHICLES
TRAPPED PROTONS
VEHICLES