Analysis of reaction Ξ- at rest by AMD-QL

The reaction Ξ- at rest is one of the most effective reactions to produce double-hyper nucleus by use of the elementary reaction: Ξ- + p → Λ + Λ + 28.3 MeV. This work investigated the production rate of double-hyper nucleus and the dependency to the target nucleus by analyzing the reactions Ξ- at rest with the target nucleus of 9Be, 12C and 14N by AMD-QL (antisymmetric molecular dynamics-quantum mechanical Langevin method), the simulation theory of the quantum statistic mechanics for fluctuation. We applied AMD-QL to the reaction: 55 MeV p + 12C. The results showed that this method improved description of dynamic spallation process, which produced light fragments in the course of pre-equilibrium process until 200 fm/c of AMD-QL. The reaction Ξ- at rest with 9Be, 12C and 14N-target nucleus was simulated by AMD-QL + cascade. The total production rate of double-hyper nucleus increased with increasing the mass number of target nucleus. When 9Be was the target nucleus, the production rate of ΛΛ6He increased to 3.6%. (S.Y.)