Transcription of The Radiation Environment - NASA
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J. Barth/Code 562 The Radiation EnvironmentSolar Protons&Heavier IonsGalactic Cosmic RaysTrapped ParticlesNikkei Science, Inc. of Japan, by K. EndoJ. Barth/Code 562 Components of the Natural EnvironmentuTransient Galactic Cosmic Rays Protons & Heavier Ions Solar Particle Events Protons & Heavier IonsuTrapped Electrons, Protons, & Heavier IonsuAtmospheric & Terrestrial Secondaries NeutronsJ. Barth/Code 562 Radiation & EffectsuTotal Ionizing Dose Cumulative long termionizing damage due toprotons & electronsuDisplacement Damage Cumulative long term non-ionizing damage due toprotons, electrons, &neutronsuSingle Event Effects Event caused by a singlecharged particle - heavy ions& protons for some devicesE. Daly/ESAJ. Barth/Code 562 SunYohkoh/SXTS olarFlareuDominates theRadiationEnvironment Source ModulatoruStructure Photosphere Chromosphere CoronaJ. Barth/Code 562 Solar WinduStream of Charged Particles from Sun sCorona Electrons Protons Heavy IonsuMagnetized PlasmauDetected Out to 10 billion km from Earth byPioneer 10uVelocity ~ 300 - 900 km/suEnergy ~.
Solar Flares uSudden Brightening Near Sunspots uSolar System’ s Largest Explosive Events uParticles Accelerated Directly by Event uHeavy Ion Rich Solar Events. J. Barth/Code 562 Magnetic Storms u“Gusty” Solar Wind Disturbs the Current Systems in the Magetosphere
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