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James A. Van Allen lab journal, September 1959-January 1961

Page 260

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By "Aviation Week" -- January 2, 1961 Total radiation dosage 30 to 35 R.A.D. during 50 hours -- (31 orbits) Total proton flux : ( 6 x (10 exponent 8) ) / (cm exponent 2). Discoverer XVII from NASA "Space Activities Summary" Launched: ?
 
Van Allen Papers