| Correlation of Upper-Atmospheric 7 Be with Solar Energetic Particle Events (2007) | |||||||||||||
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| Abstract. A surprisingly large concentration of radioactive 7 Be was observed in the upper atmosphere at altitudes above 320 km on the LDEF satellite that was recovered in January 1990. We report on follow-up experiments on Russian spacecraft at altitudes of 167 to 370 km during the period of 1996 to 1999, specifically designed to measure 7 | |||||||||||||
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