A study of inelastic interactions of deuterons and alphas in an emulsion at ?3.6 GeV/nucleon

Abstract

Various experimental characteristics of multiple production in deuteron-nucleus and alpha particle-nucleus interactions in an emulsion at ~3.6 GeV/n have been studied in dependence on the atomic number of a target and the number of interacting projectile nucleons. The data obtained do not demonstrate the noticeable collective phenomena and give the strong support to the idea that at energies of about a few GeV per nucleon the cascade mechanism is responsible for global features of heavy ion interactions.

Some interesting results on compound multiplicity in 12C-nucleus reactions at 4.5 A GeV/c

“…Although the process responsible for the production of these particles is not fully known, it is generally believed that these are the low-energy part of the internuclear cascade and that they leave the target nucleus on the same time scale as the secondaries of the interactions. To incorporate the role of grey particles, a variable termed compound multiplicity, N c ( = N g + N s ), was introduced by Jurak and Linscheid [13], and some interesting characteristics of grey and shower particles, taken together per interactions, have been investigated by several workers [14][15][16][17][18][19][20][21][22].…”

Evidence for azimuthal correlations in inelastic interactions of56Fe nuclei in emulsion at 2.5A GeV/c

“…Similar correlations are observed between s-and b-particles. Azimuthal correlations of this type were earlier observed for p-Em collisions and in interactions of light relativistic nuclei in emulsion [1,8]. Our data allows to clarify the following points: there is an obvious dependence of these correlations on the mass number a target-nucleus At; azimuthal correlations increase with At; the magnitude of the correlations depends on the number nmt of interacting nucleons of the projectile nucleus; it is maximal in events with very small Q (and large nint), i.e.…”

“…This is true irrespective of the magnitude of correlation relations between particles belonging to the same type. More information about these quantities and references to original papers are contained in [1,7].…”

Analysis of Neutron and Singly Charged Particle Multiplicities Induced by Collision of 4.5A GeV/c 16O with Emulsion Nuclei

“…In previous papers [1][2][3][4][5][6][7][8][9][10], the interactions of different relativistic nuclei (H, He,..., Si, S) with the nuclei of photo-emulsion elements at a momentum of 4.5 GeV/c per nucleon have been studied. In ref.…”