On Ternary Fission Induced by Neutrons
| Autor: | G. V. Danilyan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Nuclear and High Energy Physics Spin states Fissile material 010308 nuclear & particles physics Fission Nuclear Theory Neutron radiation 01 natural sciences Atomic and Molecular Physics and Optics medicine.anatomical_structure Saddle point 0103 physical sciences medicine Neutron Atomic physics Nuclear Experiment 010306 general physics Ternary fission Nucleus |
| Zdroj: | Physics of Atomic Nuclei. 82:250-253 |
| ISSN: | 1562-692X 1063-7788 |
| DOI: | 10.1134/s1063778819030050 |
| Popis: | Experiments on measuring the rotational effect of the 234U fissile nucleus at the scission point showed that the fissile nucleus rotates as a right screw with respect to the longitudinally polarized neutron beam direction in the ternary fission of the 233U target nucleus induced by polarized s-neutrons; in the binary fission of the same nuclei it rotates in the opposite direction. Moreover, it was found that ternary fission “prefers” the spin state of J = I +1/2. This phenomenon cannot be explained within the existing concepts of ternary fission as one of the two “final” states after neck rupture. The same “parent” 234U nucleus cannot rotate in opposite directions in the two different final states. It should be assumed that ternary fission is a special branch of descent from the saddle point to the point of neck rupture. It can also be assumed that this branch is formed at the saddle point in a configuration favorable for cluster formation. Why does it prefer the spin state of J = I + 1/2? This is an interesting question for further studies. |
| Databáze: | OpenAIRE |
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