Physics of Particles and Nuclei, 2017, Vol. 48, No. 1, pp. 147–157.

A role of the unstable nuclei , and in the dissociation of relativistic nuclei , and is under study on the basis of nuclear track emulsion exposed to secondary beams of the JINR Nuclotron. Contribution of the configuration to the nucleus structure is % which is near the value for the configuration . Distributions over the opening angle of -particle pairs indicate to a simultaneous presence of virtual and states in the ground states of the and nuclei. The core 9B is manifested in the nucleus with a probability of 30 ± 4%. Selection of the “white” stars accompanied by () leads to appearance in the excitation energy distribution of “quartets” of the distinct peak with a maximum at MeV. decays are presented in % of events of the coherent dissociation and % of the ones. The channel amounts %. The nucleus is manifested in the coherent dissociation with a probability of % including % of decays. A probability ratio of the mirror channels and is estimated to be .