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| VOLUME 32 (1980) | ISSUE 9 |
PAGE 572
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Emission of β+-delayed pairs of protons and doubly β+ -delayed protons and a particles
Gol'danskii V. I.
In addition to the two types of radioactive decay with the emission of nucleon pairs that were predicted in 1960—two-proton radioactivity so far not observed experimentally and the β "-delayed neutron pairs first observed in 1979—an emission of β +-delayed proton pairs is possible. A list of probable examples is presented. The emission of doubly β +-delayed protons and a particles, in particular, the doubly β + -delayed, proton-radioactive decays from an excited nuclear state, should be observed after a chain of two β + -decay events.
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![](/ps/1432/article_21800_800_head.png "In addition to the two types of radioactive decay with the emission of nucleon pairs that were predicted in 1960—two-proton radioactivity so far not observed experimentally and the <i>β </i>"-delayed neutron pairs first observed in 1979—an emission of <i>β </i><sup>+</sup>-delayed proton pairs is possible. A list of probable examples is presented. The emission of doubly <i>β </i><sup>+</sup>-delayed protons and <i>a </i>particles, in particular, the doubly <i>β <sup>+</sup> </i>-delayed, proton-radioactive decays from an excited nuclear state, should be observed after a chain of two <i>β <sup>+</sup> </i>-decay events.")