Evidence For Heavy Ion Emission Of U-230
CHINESE PHYSICS LETTERS(1999)
摘要
Radioisotope of Pa-230 was synthesized by proton irradiation of ThO2 powder targets with thickness of about 2g/cm(2). Pure Pa-230 was extracted and deep purified from thorium and fission products by the radiochemical method. Thin Pa-230 beta(-)/--> U-230 sources were prepared for measuring the cluster decay of U-230. Two cases of decay via heavy ion emission, which were most probably for the neon decays of U-230, were detected by using solid-state track registration detectors. The preliminary branching ration relative to alpha-decay comes out to be (1.3 +/- 0.8) x 10(-14).
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关键词
fission product
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