International Journal of Modern Physics E, Vol. 20, No. 4 (2011) 993–998

The dissociation features in nuclear track emulsion of , , and nuclei of ГэВ GeV energy are presented. The data presented for the nucleus can be considered as evidence that there is a core in its structure in the form of and states of the nucleus having roughly equal weights. Events of coherent dissociation associated with the rearrangement of the nucleons outside the -clustering are identified. A pattern of the charge fragment topology in the dissociation of and nuclei is obtained for the first time. Contribution of the unbound nucleus decays to the cascade process is identified.