arXiv Nuclear Theory
arXiv Nuclear Theory
Preprint
4 years ago

Refined scenario of the collinear cluster tri-partition mode with the greatest yield. (arXiv:2003.08591v2 [nucl-ex] UPDATED)

Yu.V. Pyatkov, D. V. Kamanin, Yu. M. Tchuvil'sky, A. A. Alexandrov, I. A. Alexandrova, Z. I. Goryainova, V. Malaza, E. A. Kuznetsova, A. O. Strekalovsky, O. V. Strekalovsky, Sh. Wyngaardt, V. E. Zhuchko
In our previous publications we discussed various manifestations of a new decay channel of the low excited heavy nuclei called collinear cluster tri-partition (CCT). The most populated CCT mode was revealed in the mass correlation distribution of fission fragments (FFs) as a local region ("bump") of increased yields below the loci linked to the conventional binary fission. The bump was dubbed "Ni-bump" because it is centered at the masses associated with the magic isotopes of Ni. Intriguing features of the CCT, especially high collinearity of the CCT partners and relatively high probability comparable with that typical for conventional ternary fission, have caused rather wide discussion. In the majority of dedicated publications, the FFs partitions from the Ni-bump have been analyzed from the different points of view. In our publications, we have underlined that Ni-bump manifests itself at the detectable level only in the spectrometer arm that faces the source backing. So far, this fact has been left beyond the scope of all known theoretical considerations, while the backing likely plays a crucial role in the observation of the CCT experimental pattern.

Publisher URL: http://arxiv.org/abs/2003.08591

DOI: arXiv:2003.08591v2

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