摘要
将能量和同位旋相关的核子-核子碰撞截面引入QMD模型中,并利用壳模型中简谐振子位的密度分布,抽样出稳定的11Li核.仔细研究了11Li+12C反应的总截面.同Cugnon参数化计算结果进行比较发现,在中低能区,引起反应总截面增大的主要原因是,该能区核子-核子碰撞截面增大、反应时间尺度增长以及Pauli阻塞效应减小.
The energy and isospin dependent nucleon-nucleon cross section is incorporated in the QMD model. The numerical stable 11Li nucleus is sampled by using the harmonic oscillator type density. The total reation cross section of 11Li+12C is studied in detail and compacts with the results calculated by using the Cugnon parameterization nucleon-nucleon cross section. It is revealed that the increase of total reaction cross section 11Li+12C in low and medium energy region is resulted from the increase of elementary nucleon-nucleon cross section and the time scale, and from the decrease of the Pauli Blocking effect.
出处
《高能物理与核物理》
CSCD
北大核心
1996年第3期270-276,共7页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
中科院LWTZ-1298经费资助
关键词
奇异核
总截面
核子-核子
碰撞截面
exotic nuclei, total reaction cross aection, nucleon-nucleon cross section.