Natural cosmogenic tritium or artificial tritium from thermonuclear tests takes the form of HTO to circulate. Before thermonuclear tests, the tritium content in precipitation was meagre, mean value 5—10 TU. After 195...Natural cosmogenic tritium or artificial tritium from thermonuclear tests takes the form of HTO to circulate. Before thermonuclear tests, the tritium content in precipitation was meagre, mean value 5—10 TU. After 1954, however, great influence has apparently been exerted by artificial tritium from numerous thermonuclear tests. In 1963,展开更多
文摘Natural cosmogenic tritium or artificial tritium from thermonuclear tests takes the form of HTO to circulate. Before thermonuclear tests, the tritium content in precipitation was meagre, mean value 5—10 TU. After 1954, however, great influence has apparently been exerted by artificial tritium from numerous thermonuclear tests. In 1963,
