CERN Accelerating science

Preprint
Report number	JINR-P1-2004-91 ; P1-2004-91
Title	Topology of White Stars in Relativistic Fragmentation of Light Nuclei
Author(s)	Andreeva, N P ; Bradnova, V ; Vokal, S ; Vokalova, A ; Gaitinov, A Sh ; Gerassimov, S G ; Goncharova, L A ; Dronov, V A ; Zarubin, P I ; Zarubina, I G ; Kovalenko, A D ; Kravchakova, A ; Larionova, V G ; Levitskaja, O V ; Lepehin, F G ; Malakhov, A I ; Moiseenko, A A ; Orlova, G I ; Peresadko, N G ; Polukhina, N G ; Rukojatkin, P A ; Rusakova, V V ; Salmanova, N A ; Sarkisian, V R ; Simonov, B B ; Stan, E ; Stanoeva, R ; Chernyavsky, M M ; Haidue, M ; Kharlamov, S P ; Tsakov, I ; Shchedrina, T V
Affiliation	(Veksler and Baldin Laboratory of High Energies, Dubna) ; (Physico-Technical Institute, Almaty, Kazakhstan) ; (P.N.~Lebedev Physical Institute RAS, Moscow, Russia) ; (P.J.Saf\'arik University, Kosice, Slovak Republic) ; (St. Petersburg Nuclear Physics Institute, High Energy Physics Division, 188350 Gatchina, Russia) ; (Yerevan State University, Armenia) ; (Institute for Space Sciences, Bucharest, Romania) ; (Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 101784 Sofia, Bulgaria)
Publication	2004
Imprint	17 Jun 2004
Number of pages	16
Published in:	Yad. Fiz.
Subject category	Particle Physics - Experiment
Abstract	In the present paper, experimental observation of the multifragmentation processes of light relativistic nuclei carried out by means of emulsions are reviewed. Events of the type of "white stars" in which the dissociation of relativistic nuclei is not accompanied by the production of mesons and the target-nucleus fragments are considered. A distinctive feature of the charge topology in the dissociation of the Ne, Mg, Si and S nuclei is an almost total suppression of the binary splitting of nuclei to fragments with charges higher than 2. The growth of the nuclear fragmentation degree is revealed in an increase in the multiplicity of singly and doubly charged fragments with decreasing charge of the main non-excited part of the fragmenting nucleus. The processes of dissociation of stable Li, Be, B, C, N, and O isotopes to charged fragments were used to study special features of the formation of systems consisting of the lightest nuclei - alpha, d and t. Clustering of the 3He nucleus can be detected in "white stars" via the dissociation of neutron-deficient Be, B, C, and N isotopes.
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