Formation of antihydrogen atoms and ions in a strongly magnetized plasma : A molecular dynamics simulation
Formation of antihydrogen atoms and ions in a strongly magnetized plasma : A molecular dynamics simulation
复制标题
强磁化等离子体中反氢原子和离子的形成：分子动力学模拟
DOI：
10.1103/physreva.72.042503
复制
发表时间：
2005
影响因子：
2.9
通讯作者：
L. Collins
中科院分区：
文献类型：
--
作者：
D. Vrinceanu;Suxing Hu;S. Mazevet;L. Collins
在分子动力学模拟中明确地证明了在正电子和反质子的磁化等离子体中反氢原子的形成。所选择的参数与实验装置是兼容的。我们采用了一个特殊的，自适应的时间步长辛积分进行完整的动力学模拟，而不使用的指导中心近似，很长的时间（{mu}s的顺序）。大量的反氢原子形成允许详细的统计分析和分布的结合能，赝动量，大小，和其他数量的特点，这些原子。我们还发现，一个显着较少的反氢正离子的形式在自由膨胀的等离子体。
Formation of antihydrogen atoms in a magnetized plasma of positrons and antiprotons is explicitly demonstrated in a molecular dynamics simulation. The parameters chosen are compatible with the experimental setup. We employ a special, adaptive time step symplectic integrator to perform full dynamics simulation, without using the guiding center approximation, for very long times (of the order of {mu}s). The large number of antihydrogen atoms formed allows detailed statistical analysis and distributions for the binding energy, pseudomomentum, sizes, and other quantities that characterize these atoms. We also find that a significantly smaller number of antihydrogen positive ions form during the free expansion of the plasma.