Recoil products from p+118Sn and d+118Sn at 3.65 GeV/A

Abstract

The recoil properties of the product nuclei from the interaction of 3.65 GeV/nucleon protons and deuterons from the Nuclotron and Synchrophasotron of the Laboratory of High Energies (LHE), Joint Institute for Nuclear Research (JINR) at Dubna with a 118 Sn target have been studied using catcher foils. The experimental data were analyzed using the mathematical formalism of the standard two-step vector model. The results for protons are compared with those for deuterons. Our experimental results were compared to three different Los Alamos versions of the Quark-Gluon String Model (LAQGSM). The forward velocity v and the recoil nuclei kinetic energy increases linearly with increasing mass loss of the target ∆A, but seems to change its slope at around ∆A = 60. It seems that light-and medium-mass products are produced partly by a fragmentation mechanism.

Recoil properties of fragments formed in 4.4 GeV deuteron-induced reactions on a gold target

“…These components are revealed in the present experiment by considering the analysis of the kinematics properties of the different mass region and compare with the results from proton-induced reaction at similar incident energies. We have also previously investigated recoil properties of fragments formed in the reactions induced by deuteron and proton beam at 3.65 GeV/nucleon on 118 Sn target [12,13]. We have used the same technique as in this work to measure the recoil properties of many of the same nuclides, thus permitting a comparison of how these properties vary with bombarding energy, target and projectile (single nucleon or system of composite nucleons).…”

Recoil studies in the reaction of 12C ions with the enriched isotope 118Sn

“…3). In our past publications [20,21] for protonand deuteron-induced reactions we revealed that such behavior of dependence is conditioned by change of mechanism of production of residuals. The same picture was obtained for the production of the measured nuclei by 12 C ions.…”

“…As one can see in article [18] formation of residual nuclei in mass region A t /3 < A < A t /2 can be explained by fragmentation as well as fission-like processes. In our previous publication [21] we described the formation of medium-weight nuclei (7 < A < 60) by multifragmentation mechanism while heavy residual nuclei were formed by evaporation mechanism. The fission-like binary decay model of GEMINI used by LAQGSM03.G1 can be regarded somehow in the middle between multifragmentation and conventional evaporation, and it looks like it describes better the present experimental data in a wide mass region of the products.…”

“…In our recent paper [21], we have investigate the recoil properties of the product nuclei on the enriched 118 Sn target at the 3.65 GeV protons and 7.3 GeV deuterons beams. Therefore it is interesting to determine the applicability of factorization to the present data.…”