The results obtained by studying the charge topology of fragments produced in the peripheral dissociation of relativistic 8B nuclei in emulsion are presented. Fifty-five events of the peripheral dissociation of a 8B nucleus in events where there was no production of target-nucleus fragments and mesons (“white stars”) were selected. A leading contribution of the 8B → 7Be + p mode, which has the lowest energy threshold, was revealed on the basis of these events. Information about the branching ratios for dissociation modes characterized by a higher multiplicity was obtained. The dissociation of the 7Be core in 8B bears resemblance to the dissociation of a free 7Be nucleus. The transverse-momentum distributions of fragments originating from the 8B → 7Be + p dissociation mode were obtained. For these distributions, a small mean value of 〈P*T〉 = 52 ± 5 MeV/c in the c.m. frame suggests a low binding energy of the outer proton in the 8B nucleus. An indication of a strong azimuthal correlation of the fragments 7Be and p was found.
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W. Schwab et al., Z. Phys. A 350, 283 (1995).
M. H. Smedberg et al., Phys. Lett. B 452, 1 (1999).
N. P. Andreeva et al., Yad. Fiz. 68, 484 (2005) [Phys. At. Nucl. 68, 455 (2005)].
The BECQUEREL Project, http://becquerel.jinr.ru/
M. I. Adamovich et al., Yad. Fiz. 62, 1461 (1999) [Phys. At. Nucl. 62, 1378 (1999)].
M. I. Adamovich et al., Yad. Fiz. 67, 533 (2004) [Phys. At. Nucl. 67, 514 (2004)].
N. G. Peresad’ko et al., Yad. Fiz. 70,No. 7 (2007); [Phys. At. Nucl. 70, No. 7 (2007)].
M. Meister et al., Nucl. Phys. A 718, 431c (2003).
Original Russian Text © R. Stanoeva, V. Bradnova, S. Vokál, P.I. Zarubin, I.G. Zarubina, N.A. Kachalova, A.D. Kovalenko, A.I. Malakhov, G.I. Orlova, N.G. Peresadko, P.A. Rukoyatkin, V.V. Rusakova, E. Stan, M. Haiduc, S. P. Kharlamov, I. Tsakov, T.V. Shchedrina, 2007, published in Yadernaya Fizika, 2007, Vol. 70, No. 7, pp. 1255–1260.
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Stanoeva, R., Bradnova, V., Vokál, S. et al. Peripheral fragmentation of 8B nuclei in nuclear emulsion at an energy of 1.2 GeV per nucleon. Phys. Atom. Nuclei 70, 1216–1221 (2007). https://doi.org/10.1134/S1063778807070113