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Radiation Environment Measurements from SOHO/ERNE during the Solar Cycle 23

  • Authors: Lehtinen, I.; Riihonen, E.; Valtonen, E.
  • Publication: 36th COSPAR Scientific Assembly. Held 16 - 23 July 2006, in Beijing, China., p.2951, 2006
  • Statistical study
  • ADS link
  • Abstract: During its ten years of operation ERNE particle instrument the Energetic and Relativistic Nuclei and Electron experiment onboard the Solar Heliospheric Observatory SOHO has measured a large number of solar energetic particle SEP events. These unpredictable and highly variable bursts of high-energy particles are a major concern for space-systems as they cause both short-term and long-term damage to microelectronics and other satellite parts. We present our results from a survey in which we studied proton He and heavy ion O Fe and few others fluencies for several events of different sizes in the energy range from 2 MeV nucleon to few hundreds of MeV nucleon. We were also able to study evolution of particle fluxes during some of the events thanks to large geometric factors of two ERNE s particle telescopes. Linear energy transfer LET spectra were measured using one of the seven detector layers of the High Energy Detector HED.

Created by mevali. Last Modification: Tuesday 22 of May, 2007 13:05:39 UTC by mevali.