One-center calculations of the electron-positron pair creation in low-energy collisions of heavy bare nuclei
One-center calculations of the electron-positron pair creation in low-energy collisions of heavy bare nuclei
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DOI：
10.1140/epjd/e2018-90056-4
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
R. V. Popov;A. I. Bondarev;Y. Kozhedub;I. A. Maltsev;V. Shabaev;I. Tupitsyn;Xinwen Ma;G. Plunien;T. Stöhlker
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文献类型：
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作者：
R. V. Popov;A. I. Bondarev;Y. Kozhedub;I. A. Maltsev;V. Shabaev;I. Tupitsyn;Xinwen Ma;G. Plunien;T. Stöhlker
摘要计算了超越单极近似的裸铀原子核的迎头碰撞产生束缚自由电子-正电子对的几率。计算基于目标坐标系中含时狄拉克方程的数值求解，并考虑了弹射势的多极展开。此外，还研究了在单极近似下对产生截面的能量依赖性。
AbstractThe probabilities of bound-free electron-positron pair creation are calculated for head-on collisions of bare uranium nuclei beyond the monopole approximation. The calculations are based on the numerical solving of the time-dependent Dirac equation in the target reference frame with multipole expansion of the projectile potential. In addition, the energy dependence of the pair-creation cross section is studied in the monopole approximation.Graphical abstract