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Search for Ra-226 spontaneous fission and systematics of the probabilities of spontaneous fission, alpha decay, and cluster decay

Abstract : A lower limit on the half-life T-1/2 of Ra-226 With respect to spontaneous fission has been measured at a level of 4 x 10(18) yr. The probability of Ra-226 spontaneous fission proved to be about 50 times less than the value expected from the known systematics relating the ratio of the alpha-decay and spontaneous-fission probabilities to the fissility parameter Z(2)/A. It has been shown that the probabilities of spontaneous fission, alpha decay, and cluster decay of 88 less than or equal to Z less than or equal to 100 even-even nuclei admit a unified systematization in terms of the difference of the Coulomb energy in the vicinity of the scission point, V-Coul, and decay energy Q.
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http://hal.in2p3.fr/in2p3-00004215
Contributor : Suzanne Robert <>
Submitted on : Monday, March 20, 2000 - 12:51:57 PM
Last modification on : Thursday, November 19, 2020 - 8:06:01 AM

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Vl. Mikheev, S.P. Tretyakova, M. Hussonnois, C. Le Naour, A.N. Golovchenko, et al.. Search for Ra-226 spontaneous fission and systematics of the probabilities of spontaneous fission, alpha decay, and cluster decay. Physics of Atomic Nuclei / Yadernaya Fizika, MAIK Nauka/Interperiodica, 1999, 62, pp.1158-1163. ⟨in2p3-00004215⟩

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