Study of Matter Properties and Fragmentation Behavior from Highly Excited States in Multi-strange Nuclear Systems.

1(1)利用反对称核动力学结合多步二进制统计衰变，研究了轻核靶上K^-静态吸收^<16>O,^<12>C到^9Be的^4_<BDA>H的形成概率。(2)采用一种精细的微观输运模型，研究了在^<12>C上XI^-静止吸收形成单、双和双超核的机制，该模型将最新发展的量子Langein处理纳入到反对称分子动力学（AMD-QL）中(1)研究了pk=1.65 GeV/c时（K^-, K^+）反应的动量谱，并建立了具有重要的两步过程的核内级联模型，该模型可以在不同的靶上再现实验数据。(2)对K<@D1-@>D1静态吸收的分支比进行中校正，表明LAMBDA（1405）是KN的束缚态，更能描述pi<@D1(]SY.+-。() @ > D1 spectrum.3(1)采用中心二体SIGMA进行了微观SIGMANN计算，结果表明，由于SIGMAN势的通道耦合，存在S=1/2， T=1的不稳定束缚态。这种状态可以在^4He（停止K^-， pi^+）反应中诱导SIGMAN*LAMBDAN转换衰减。(2)提出了核-SIGMA势来解释SIGMA^-原子x射线和SIGMA-超核产生测量。^9Be（飞行中的K^-， pi^-）反应的计算表明，光谱形状来自于^ 9_mabe中α +^4_MAHe (^4_MAH) +n (p)的簇行为(1)计算了K^——p和K^——d原子的x射线产率与靶密度的函数关系，以寻找实验的最佳条件。(2)在DWIA框架下研究了^4He靶上飞行（K^-, pi）反应产生的sigma -超核。结果表明，飞行反应提供了^4_MAHe不稳定束缚态宽度和结构的明确信息。结果表明，强度函数可以表示为界项、共振项和连续项的贡献之和，并且可以用复标度法互补地考察各项的作用。少

1 (1) Formation probabilities of ^4_<BDA>H from K^- absorption at rest on light nuclear targets ^<16>O,^<12>C to ^9Be, were investigated employing antisymmetrized nuclear dynamics combined with multi-step binary statistical decay.(2) Formation mechanisms of single, twin and double hypernuclei from XI^- absorption at rest on ^<12>C were investigated with a refined microscopic transport model, that incorporates the recently developed Quantal Langein treatment into Antisymmetrized Molecular Dynamics (AMD-QL).2 (1) Momentum spectrum in the (K^-, K^+) reactions at pk=1.65 GeV/c was investigated in an intranuclear cascade model with the important two-step processes, which can reproduce the experimental data on various targets.(2) In-medium corrections to the branching ratio in K<@D1-@>D1 absorption at rest, suggested that the LAMBDA (1405) is a bound state of KN,and showed a better description of pi<@D1(]SY.+-。[)@>D1 spectrum.3 (1) Microscopic SIGMANN calculations with central two-body SIGMA … More N interaction suggested that there exist unstable bound states of S=1/2, T=1 due to the channel coupling through the SIGMAN potential. The state can induce a SIGMAN*LAMBDAN conversion decay in the ^4He (stopped K^-, pi^+) reaction.(2) A nucleus-SIGMA potential was presented to explain the both SIGMA^- atomic X-ray and SIGMA-hypernuclear production measurements. Calculations in the ^9Be (in-flight K^-, pi^-) reaction suggested that a spectral shape comes from cluster behavior of alpha+^4_MAHe (^4_MAH) +n (p) in ^9_MABe.4 (1) X-ray yields of K^--p and K^--d atoms were calculated as a function of the target density in order to find an optimum condition for experiments.(2) SIGMA-hypernuclear productions by in-flight (K^-, pi) reactions on the ^4He target were investigated theoretically in the DWIA framework. The results showed that the in-flight reaction provides definitive information on the width and the structure of ^4_MAHe unstable bound state.It was shown that the strength function can be expressed in a sum of the contributions form bound, resonance and continuum terms and the role of each term can be investigated complementarily by using the complex scaling method. Less