Detection of Uranium from Cosmos-1402 in the Stratosphere

Details Detection of Uranium from Cosmos-1402 in the Stratosphere Detection of Uranium from Cosmos-1402 in the Stratosphere

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sci...238..512l&link_type=abstract

Science, Volume 238, Issue 4826, pp. 512-514

Physics

2

Scientific paper

The nuclear reactor from the Soviet radar reconnaissance satellite, Cosmos-1402, reentered the earth's atmosphere on 7 February 1983 and disintegrated over the South Atlantic Ocean. The reactor was powered by approximately 50 kilograms of uranium-235 (235U). In an effort to determine the fate of the reactor core, a series of aerosol samples were collected at altitudes between 27 and 36 kilometers in the Northern Hemisphere approximately 1.1 years later by high-altitude balloons. At an altitude of 36 kilometers a 53 ± 20 percent excess in the 235U concentration was measured. The total excess of 235U in the stratosphere was calculated to be 44 ± 15 kilograms.

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