Interactions of Relativistic ${}^6$Li Nuclei with Photoemulsion Nuclei

Abstract

Inelastic interactions of nuclei accelerated to a momentum of 4.5 GeV/$c$ per projectile nucleon with photoemulsion nuclei have been investigated. The main features of these interactions - mean ranges of ${}^6$Li nuclei, mean multiplicities of secondaries, the isotopic composition of fragments, fragmentation channels, and the mean transverse momenta of projectile fragments - have been measured. The probability of the charge-exchange reaction featuring lithium nuclei has been determined. The results obtained for the ${}^6$Li nucleus have been compared with data for other nuclei. The observed features of ${}^6$Li interactions with other nuclei indicate that the ${}^6$Li structure in the form of the loosely bound system consisting of an $\alpha$-particle and a deuteron cluster clearly manifests itself in these interactions. Events resulting in the coherent dissociation of ${}^6$Li nuclei into ${}^4$He+$d$, ${}^3$He+$t$, and $t+d+p$ and involving low-lying excitations of ${}^6$Li have been observed.