论文标题
通过速度复杂空间中的极点解释的多料离子的原子电离
Atomic ionization by multicharged ions interpreted in terms of poles in the velocity complex space
论文作者
论文摘要
我们通过高电荷库仑弹丸的影响研究氢和氦的单电离。为了解释横截面，我们引入了对角线帕德近似。我们发现使用padé％[4,4]很好地描述了连续性扭曲的波浪eikonal初始状态理论在其有效性范围内。 PAD％É近似值的分母的节点在速度复合平面中产生四个极点：在上层平面中有两个，在下层平面中的结合物。这些极点对弹丸电荷的依赖性可以合理地适合为电离横截面的封闭形式，从而使缩放缩放到Janev和Presnyakov的一个非常接近。可用的实验在整个速度范围内很好地描述了使用PADé[8,8]，在上层平面上有四个极点，并且在下层平面中具有共轭。我们得出的结论是，PADé近似杆的杆似乎具有总电离横截面的所有信息
We study the single ionization of hydrogen and helium by the impact of a highly-charged Coulomb projectile. To interpretate the cross section we introduce a diagonal Padé approximant. We find that the use of Padé% [4,4] describes very well the Continnum Distorted Wave Eikonal Initial State theory within its range of validity. The nodes of the denominator of the Pad% é approximant give rise to four poles in the velocity complex plane: two in the upper plane and their conjugate in the lower plane. The dependence of these poles with the projectile charge can be reasonably fitted to give a closed-form for the ionization cross section, resulting a scaling very near to the one of Janev and Presnyakov. The experiments available were described very well in its entire velocity range with the use of a Padé[8,8], having four poles in the upper plane and their conjugate in the lower plane. We conclude that the poles of the Padé approximant seem to have all the information of the total ionization cross section
