论文标题
在中间和高能量的细胞核碰撞中，耦合的动力学和统计机制
Coupling dynamical and statistical mechanisms for baryonic cluster production in nucleus collisions of intermediate and high energies
论文作者
论文摘要
中央核核碰撞会产生许多新的重子，并且可以从这些物种中形成核簇。现象学结合模型足以描述在非常广泛的碰撞能量中的光核产量。我们证明，实际上可以将合并过程视为1）形成原发性稀释的激发baryon簇和2）它们以下统计衰减，导致最终的冷碎片产生。我们认为，从相互作用的重子中形成这种激发系统是在核核密度下核相互作用的自然结果，导致有限系统中的核液体加速器类型相变。这样，人们就可以对实验片段产量（FOPI数据）提供一致的解释，包括相对论离子反应中重要的碰撞能量依赖性。我们研究了这种新型碎片生产的规律性，例如它们的产量，同胞和动能特征。提出了这种用于多核问题的聚类机制的概括。同位素的产量和粒子相关性应足以研究这些现象。
Central nucleus-nucleus collisions produce many new baryons and the nuclear clusters can be formed from these species. The phenomenological coalescence models were sufficiently good for description of light nuclei yields in a very broad range of collision energies. We demonstrate that in reality the coalescence process can be considered as 1) the formation of primary diluted excited baryon clusters and 2) their following statistical decay leading to the final cold fragment production. We argue that the formation of such excited systems from the interacting baryons is a natural consequence of the nuclear interaction at subnuclear densities resulting in the nuclear liquid-gas type phase transition in finite systems. In this way one can provide a consistent interpretation of the experimental fragment yields (FOPI data) including the important collision energy dependence in relativistic ion reactions. We investigate the regularities of this new kind of fragment production, for example, their yield, isospin, and kinetic energy characteristics. A generalization of such a clusterization mechanism for hypernuclear matter is suggested. The isotope yields and particle correlations should be adequate for studying these phenomena.
