Study of the Involvement of {sup 8}Be and {sup 9}B Nuclei in the Dissociation of Relativistic {sup 10}C, {sup 10}B, and {sup 12}C Nuclei

Journal Article · Wed Nov 15 00:00:00 EST 2017 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778817060047· OSTI ID:22759624

Artemenkov, D. A.; Bradnova, V. ^[1]; Britvich, G. I. ^[2]; Zaitsev, A. A.; Zarubina, I. G. ^[1]; Kalinin, V. A. ^[2]; Kattabekov, R. R.; Kornegrutsa, N. K. ^[1]; Kostin, M. Yu.; Maksimov, A. V. ^[2]; Mamatkulov, K. Z.; Mitseva, E. ^[1]; Neagu, A. ^[3]; Pikalov, V. A.; Polkovnikov, M. K. ^[2]; Rukoyatkin, P. A.; Rusakova, V. V. ^[1]; Sarkisyan, V. R. ^[4]; Stanoeva, R. ^[5]; others, and

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1. Joint Institute for Nuclear Research (Russian Federation)
2. National Research Center Kurchatov Institute, Institute for High Energy Physics (Russian Federation)
3. Institute of Space Science (Romania)
4. Yerevan Physics Institute (YerPhI) (Armenia)
5. South-Western University (Bulgaria)

The results obtained by estimating the contribution of 8Be and 9B nuclei to the coherent dissociation of {sup 10}C, {sup 10}B, and {sup 12}C relativistic nuclei in nuclear track emulsions (“white” stars) are presented. The selection of white stars accompanied by 9B leads to a distinct peak appearing in the distribution of the excitation energy of 2α2p ensembles and having a maximum at 4.1 ± 0.3 MeV. A 8Be nucleus manifests itself in the coherent-dissociation reaction {sup 10}B → {sup 2}He + H with a probability of (25 ± 5)%, (14 ± 3)% of it being due to 9B decays. The ratio of the branching fractions of the {sup 9}B + n and {sup 9}Be + p mirror channels is estimated at 6 ± 1. An analysis of the relativistic dissociation of {sup 12}C nuclei in a nuclear track emulsion revealed nine 3α events corresponding to the Hoyle state.

• OSTI ID: 22759624
• Journal Information: Physics of Atomic Nuclei, Vol. 80, Issue 6; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM 8
BERYLLIUM 9
BORON 10
BORON 9
BRANCHING RATIO
CARBON 10
CARBON 12
DISSOCIATION
EMULSIONS
HELIUM 2
MEV RANGE 01-10
RELATIVISTIC RANGE
STARS