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Auq+(q=47,55)离子的电子碰撞强度与速率系数

方泉玉 蔡蔚 邹宇 李萍 徐志瑾

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Auq+(q=47,55)离子的电子碰撞强度与速率系数

方泉玉, 蔡蔚, 邹宇, 李萍, 徐志瑾

EXCITATION COLLISION STRENGTH AND RATE-COEFFICIENT OF Auq+(q=47,55) IONS BY ELECTRON IMPACT

FANG QUAN-YU, CAI WEI, ZOU YU, LI PING, XU ZHI-JIN
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  • 用准相对论扭曲波方法计算了Auq+(q=47,55)离子的组态重心能级之间的电子碰撞激发强度和速率系数(简称激发参数).着重分析了高能区光学允许跃迁的碰撞强度的行为,探讨了平面波近似的适用范围.与其他完全相对论数据比较,表明剩余的相对论效应是不大的.阐述了由约化量的5点样条值内插可得任意能量的碰撞强度和任意温度的速率系数.演示了碰撞强度随能量的变化,有效碰撞强度和速率系数随温度的变化.结果表明在类镍金两侧各延伸的4种不同荷电离子,其单电子激发参数变化小于10%,这对于使用平均原子模型
    The collision strength of excitation among configuration-average levels by electron impact in Auq+(q=47,55)ions are computed systematically by using the quasirelativistic distorted wave(QRDW)methods.We discuss the behavior of the collision strengths in high energy range and applicable condition of the plane wave approximation.It is shown that the QRDW method can reproduce major relativistic effects as compared with the fully relativistic distorted wave results of Zhang and Sampson et al.In this paper the collision strength are scaled and fitted with a least-square spline method.As a result thermal average rate coefficients in the entire range can be determined by five parameters for one transition process.We also offers some typical curves which demonstrate the variation of the collision strengths with electron energy and the variation of effective collision strengths and rate coefficients with electron temperature.The result shows that the discrepancy of single electron excited data of eight kinds of ions around Ni-like gold is lower than 10%.This is very favorable for the average atom(AA) model which simulates dynamics process in thermal plasma.
    • 基金项目: 国家高技术计划惯性约束聚变领域基金和国家自然科学基金资助的课题.
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  • 文章访问数:  6196
  • PDF下载量:  668
  • 被引次数: 0
出版历程
  • 收稿日期:  1996-05-22
  • 刊出日期:  1997-03-20

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