Calculating the S -matrix of low-energy heavy-ion collisions using quantum coupled-channels wave-packet dynamics
Calculating the S -matrix of low-energy heavy-ion collisions using quantum coupled-channels wave-packet dynamics
复制标题
使用量子耦合通道波包动力学计算低能重离子碰撞的 S 矩阵
DOI：
10.1103/physrevc.104.064601
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发表时间：
2021
影响因子：
3.1
通讯作者：
Vockerodt T
中科院分区：
文献类型：
--
作者：
Vockerodt T
本文采用含时耦合道波包方法研究了弹丸与目标的融合与散射。我们基准计算的矩阵元素，融合截面，散射微分截面与时间无关的耦合通道方法，并比较结果与实验数据。我们发现，我们的时间相关的方法和时间无关的方法产生定量相似的结果的矩阵元素和融合截面，但我们的方法不能定量解释实验散射微分截面，主要是由于低的最大数量的分波产生的时间相关的方法。然而，我们的方法和时间无关的方法之间的强协议表明，时间相关的耦合通道波包方法可以用于解决聚变反应的能量范围很广，与能够扩展到时间相关的哈密顿核反应的更先进的建模的优势。
We investigate the fusion and scattering of aprojectile ontargets using the time-dependent coupled-channels wave-packet method. We benchmark calculations of the-matrix elements, fusion cross sections, and scattering differential cross sections with those from the time-independent coupled-channels method, and compare the results to experimental data. We find that our time-dependent method and the time-independent method produce quantitatively similar results for the-matrix elements and fusion cross sections, but our method cannot quantitatively explain the experimental scattering differential cross sections, mainly due to the low maximum number of partial waves produced by the time-dependent method. Nevertheless, the strong agreements between our method and the time-independent method demonstrates that the time-dependent coupled-channels wave-packet method can be used to address fusion reactions for a wide range of energies, with the advantage of being able to extend to time-dependent Hamiltonians for more advanced modeling of nuclear reactions.