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首页> 外文期刊>Physical review, C >Nuclear fragmentation induced by low-energy antiprotons within a microscopic transport approach
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Nuclear fragmentation induced by low-energy antiprotons within a microscopic transport approach

机译：低能量反水解在微观传输方法中诱导的核碎片

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摘要

Within the framework of the Lanzhou quantum molecular-dynamics transport model, the nuclear fragmentation induced by low-energy antiprotons has been investigated thoroughly. A coalescence approach is developed for constructing the primary fragments in phase space. The secondary decay process of the fragments is described by a well-known statistical code. It is found that the localized energy released in antibaryon-baryon annihilation is deposited in a nucleus mainly via pion-nucleon collisions, which leads to the emissions of pre-equilibrium particles, fission, evaporation of nucleons, light fragments, etc. The strangeness exchange reactions dominate the hyperon production. The averaged mass loss increases with the mass number of target nucleus. A bump structure in the domain of intermediate mass for heavy targets appears owing to the contribution of fission fragments.
机译：在兰州量子分子动力学传输模型的框架内，通过彻底调查了低能量反水解诱导的核碎片。 开发了一种聚结方法，用于构建相空间中的初级碎片。 片段的二次衰减过程由众所周知的统计码描述。 结果发现，在核心碰撞中沉积在核 - 尼核湮灭中释放的局部能量，这主要通过π-核聚核核碰撞沉积，这导致核心前颗粒，裂变，核磁蒸发，轻质碎片等的排放 反应主导高速生产。 平均质量损失随质量靶核的质量增加而增加。 由于裂变片段的贡献，出现了重物中中间质量领域的凸块结构。

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