Be7, P32, P33, and S35: Stratospheric concentrations and artificial production
| Autor: | N. A. Dimond, P. J. Drevinsky, E. C. Couble, J. T. Wasson |
|---|---|
| Rok vydání: | 1964 |
| Předmět: |
Atmospheric Science
Test series Fission products Radionuclide Ecology Paleontology Soil Science Forestry Aquatic Science Nuclear weapon Oceanography Atmospheric sciences Nuclear physics Geophysics Space and Planetary Science Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Nuclide Soviet union Stratosphere Strontium-90 Earth-Surface Processes Water Science and Technology |
| Zdroj: | Journal of Geophysical Research. 69:1457-1467 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/jz069i008p01457 |
| Popis: | Cosmic-ray-produced Be7, P32, P33, and S35 radioactivities have been measured in aircraft filter collections made at 20 km over the central United States during 1961 and 1962. Fission products Ba140 and Sr90 have been measured in the same samples. Observed concentrations of the natural radionuclides were close to the predicted equilibrium levels before the resumption of nuclear weapons tests by the Soviet Union in 1961. Strong evidence of artificial production of P32 and S35 during the 1961 Soviet tests was found. These nuclides were also produced during the 1962 United States tests, and there is also evidence for the production of Be7 and P33 during the latter test series. The artificial production can be satisfactorily explained by a consideration of possible target materials in the weapons and of the radiations present in nuclear explosions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text