Characteristics of barion-clusters in relativistic nuclear interactions

Full text: It was already mentioned in first papers on relativistic nuclear physics that there were two scales of kinematic variables one of which corresponds to nucleon degrees of freedom, and the other one to quark [1-2]. For their observation, it is necessary to use all the information accessible to experiment, in particular that obtained on track devices. There is such a possibility in the new relativistic-invariant approach that enables one to obtain strict classification of nuclear interactions and the main characteristics of formation of proton-cluster groups. The experimental data were obtained with the use of 2-meter propane bubble chamber irradiated by protons and nuclei (d, α,C) at the momentum P=4.2 GeV/s per nucleon on synchrophasotron of LHE JINR (Dubna, Russia). The formation of Baryon-Clusters nC and p20Ne interaction at 40 and 300 GeV/s. Formation of proton clusters has been studied in the space of four-dimension relative velocities. The following has been found: a) One cluster with temperature T=70±5 MeV is formed in pC-, and dC-interactions; b) Two clusters, of which one with the temperature corresponding to that of pC-, and dC-interactions, and the second one with T=120±10 MeV are formed in αC- and CC-interactions. the spectrum of effective mass of Proton-Clusters with different multiplicity np at nC and p20Ne interaction at 40 and 300 GeV/s was analyzed. The nucleon clusters formed in intermediate region of relativistic nuclear interactions are characterized by universal properties on two similarity parameters: scale-invariant bk, and scale-invariant xk. These data confirm conclusion on existence of first intermediate asymptotic. References: 1. A.M. Baldin - JINR, P1-5819, Dubna, 1971.; 2. A.M. Baldin - Nucl.Phys., 1985, A 434, p. 695c. (authors)