反质子引起的核反应中碎裂机制和粒子产生（英文）
发布时间：2018-07-13 12:01
【摘要】：基于兰州量子分子动力学(LQMD)模型,系统研究了低能反质子引起的核反应中原子核碎裂机制和粒子产生。在LQMD输运模型中,考虑了反重子-重子、重子-重子和介子-重子碰撞可能产生的弹性散射、湮灭反应、电荷交换和非弹性散射。发展了并合模型,用于相空间构造初级碎片产生。处于激发态的碎片退激是基于统计模型描述。研究结果说明超子主要是由于奇异性交换产生;重碎片裂变会导致中等质量区域碎片产额增加;反质子引起的核反应有利于产生s=-2和s=1奇特超核,并给出了产生截面。
[Abstract]:Based on Lanzhou quantum molecular dynamics (LQMD) model, the nuclear fragmentation mechanism and particle generation in low energy antiproton induced nuclear reactions were systematically studied. In the LQMD transport model, the potential elastic scattering, annihilation reaction, charge exchange and inelastic scattering of antibaryon-baryons, baryons and meson-baryons are considered. A hybrid model is developed for the generation of primary fragments in phase space structures. The deexcitation of fragments in the excited state is based on the statistical model description. The results show that the hyperons are mainly due to singularity exchange, the fission of heavy fragments will lead to the increase of fragment yield in the middle mass region, and the nuclear reaction induced by antiprotons will be conducive to the production of the peculiar supernuclei sn-2 and sl1, and the generation cross sections are given.
【作者单位】： 中国科学院近代物理研究所;
【基金】：National Natural Science Foundation of China(11675226,11175218) National Basic Research Program of China(973 Program)(2015CB856903) Youth Innovation Promotion Association of Chinese Academy of Sciences~~
【分类号】：O571
本文编号：2119303
[Abstract]:Based on Lanzhou quantum molecular dynamics (LQMD) model, the nuclear fragmentation mechanism and particle generation in low energy antiproton induced nuclear reactions were systematically studied. In the LQMD transport model, the potential elastic scattering, annihilation reaction, charge exchange and inelastic scattering of antibaryon-baryons, baryons and meson-baryons are considered. A hybrid model is developed for the generation of primary fragments in phase space structures. The deexcitation of fragments in the excited state is based on the statistical model description. The results show that the hyperons are mainly due to singularity exchange, the fission of heavy fragments will lead to the increase of fragment yield in the middle mass region, and the nuclear reaction induced by antiprotons will be conducive to the production of the peculiar supernuclei sn-2 and sl1, and the generation cross sections are given.
【作者单位】： 中国科学院近代物理研究所;
【基金】：National Natural Science Foundation of China(11675226,11175218) National Basic Research Program of China(973 Program)(2015CB856903) Youth Innovation Promotion Association of Chinese Academy of Sciences~~
【分类号】：O571
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