1. Study of the Involvement of $^8$Be and $^9$B Nuclei in the Dissociation of Relativistic $^{10}$C, $^{10}$B, and $^{12}$C Nuclei
- Author
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Artemenkov, D. A., Bradnova, V., Britvich, G. I., Zaitsev, A. A., Zarubin, P. I., Zarubina, I. G., Kalinin, V. A., Kattabekov, R. R., Kornegrutsa, N. K., Kostin, M. Yu., Maksimov, A. V., Mamatkulov, K. Z., Mitseva, E., Neagu, A., Pikalov, V. A., Polkovnikov, M. K., Rukoyatkin, P. A., Rusakova, V. V., Sarkisyan, V. R., Stanoeva, R., Firu, E., Haiduc, M., and Kharlamov, S. P.
- Subjects
Nuclear Experiment - Abstract
The results obtained by estimating the contribution of $^8$Be and $^9$B nuclei to the coherent dissociation of $^{10}$C, $^{10}$B, and $^{12}$C relativistic nuclei in nuclear track emulsions (``white'' stars) are presented. The selection of ``white'' stars accompanied by $^9$B leads to a distinct peak appearing in the distribution of the excitation energy of 2$\alpha$2$p$ ensembles and having a maximum at 4.1 $\pm$ 0.3 MeV. A $^8$Be nucleus manifests itself in the coherent-dissociation reaction $^{10}$B $\to$ 2He + H with a probability of (25 $\pm$ 5)\%, (14 $\pm$ 3)\% of it being due to $^9$B decays. The ratio of the branching fractions of the $^9$B + $n$ and $^9$Be + $p$ mirror channels is estimated at 6 $\pm$ 1. An analysis of the relativistic dissociation of $^{12}$C nuclei in a nuclear track emulsion revealed nine 3$\alpha$ events corresponding to the Hoyle state.
- Published
- 2024
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