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

被引:3
|
作者
Artemenkov, D. A. [1 ]
Bradnova, V. [1 ]
Britvich, G. I. [2 ]
Zaitsev, A. A. [1 ,3 ]
Zarubin, P. I. [1 ,3 ]
Zarubina, I. G. [1 ]
Kalinin, V. A. [2 ]
Kattabekov, R. R. [1 ]
Kornegrutsa, N. K. [1 ]
Kostin, M. Yu. [2 ]
Maksimov, A. V. [2 ]
Mamatkulov, K. Z. [1 ]
Mitseva, E. [1 ]
Neagu, A. [4 ]
Pikalov, V. A. [2 ]
Polkovnikov, M. K. [2 ]
Rukoyatkin, P. A. [1 ]
Rusakova, V. V. [1 ]
Sarkisyan, V. R. [5 ]
Stanoeva, R. [6 ,7 ]
Firu, E. [4 ]
Haiduc, M. [4 ]
Kharlamov, S. P. [3 ]
机构
[1] Joint Inst Nucl Res, Ul Joliot Curie 6, Dubna 141980, Moscow Oblast, Russia
[2] Natl Res Ctr, Kurchatov Inst, Inst High Energy Phys, Pl Nauki 1, Protvino 142280, Moscow Oblast, Russia
[3] Russian Acad Sci, Lebedev Phys Inst, Leninskii Pr 53, Moscow 119991, Russia
[4] Inst Space Sci, Bucharest 077125, Romania
[5] Yerevan Phys Inst YerPhI, Alikhanian Bros Str 2, Yerevan 0036, Armenia
[6] South Western Univ, Blagoevgrad, Bulgaria
[7] Bulgarian Acad Sci, INRNE, 72 Tsarigradsko Chaussee, Sofia 1784, Bulgaria
关键词
EMULSION;
D O I
10.1134/S1063778817060047
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The results obtained by estimating the contribution of 8Be and 9B nuclei to the coherent dissociation of C-10, B-10, and C-12 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 2 alpha 2p ensembles and having a maximum at 4.1 +/- 0.3 MeV. A 8Be nucleus manifests itself in the coherent-dissociation reaction B-10 -> He-2 + H with a probability of (25 +/- 5)%, (14 +/- 3)% of it being due to 9B decays. The ratio of the branching fractions of the B-9 + n and Be-9 + p mirror channels is estimated at 6 +/- 1. An analysis of the relativistic dissociation of C-12 nuclei in a nuclear track emulsion revealed nine 3 alpha events corresponding to the Hoyle state.
引用
收藏
页码:1126 / 1132
页数:7
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