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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。
Based on Lanzhou quantum molecular dynamics (LQMD) model, the mechanism of nuclear fragmentation and particle generation in nuclear reaction caused by low-energy anon proton are studied systematically. In the LQMD transport model, the elastic scattering, annihilation reaction, charge exchange and inelastic scattering that may arise from the reaction of baryon-baryon, baryon-baryon and meson-baryon are considered. The merge model was developed for the phase space construction of primary debris generation. Fragmented retreat in the excited state is based on a statistical model description. The results show that the hyperon is mainly due to the singularity exchange; the fragmentation of the heavy fragment leads to an increase in the fragment yield in the middle-quality region; the anti-proton-induced nuclear reaction favors the generation of odd hypernucleons of s = -2 and s = 1, Produce cross-section.