基于重离子加速器、CSR：重元素高离化态原子的实验研究

Highly ionized ions are in high-temperature plasma. For heavy atomic structure of highly ionized ions, there are relativistic effect and effects of electron correlation. This programe will be carry out using Heavy Ion Research Facility of Lanzhou (HIRFL) and HIRFL-CSR(Cooler-Storage-Ring)system. The exprimental measurements have aimed at obtaining atomic-structure of H-,He-like isoelectronic sequence in high Z elements,as well as transition spectral lines,energy lifetimes,transition probailities and oscillator intensities from Cu-like isoelectronic sequence and Be-,B- C-,N-,O-like isoelectronic sequence for elements of 38＜Z＜53 ,71＜Z＜80 and 22＜Z＜29.The QED effects are effects are quite improtant for highly charged heavy ions.one of the most improtant QED effects is the shift in the energy level.These experimental results are not only study relationship nucleus charge with relativistic effect and QED effectas but also afford the absence of structure of highly ionized ions and spectral data.Spectral parameters of highly charged atoms are useful for research of x-ray laser ,inertial confinement fusion (ICF),diagnostic of plasma and spectralanalysis of galaxy.

高离化态原子(离子)存在高温等离子体系统中。对于高离化态重原子结构，相对论和电子相关效应并存。本项目以兰州重离子加速器（HIRFL)和重离子冷却储存环（HIRFL+CSR）系统为依托，选择性系统完成元素周期表五周期(38‹Z‹53)和第六周期（71‹Z‹80）中一些高Z元素的氢、类氦原子能级结构，类铍、类硼、类碳、类氮、类氧和类铜等电子序以及一些铁峰(22‹Z‹29)元素中类铍、类硼、类碳、类氮、类氧等电子序高离化态原子辐射光谱、跃迁几率、能级寿命和振子强度等的实验研究。通过这些内容的实验研究，揭示和给出相对论效应及QED效应与核电荷关系、检验QED和相对论效应对能级结构和衰变率的影响。在高离化态原子能级结构、性质和光谱学研究方面，填补尚属空白的高离化态原子实验数据，为X射线激光研究、惯性约束聚变研究、等离子体诊断和星体光谱分析、解释天体辐射等提供重要的物理信息。

对于高离化态Cu XV 到 Cu XXIII，在波长160–360 Å范围测量了2p23p–2p23d, 2p43s–2p43p, 2p43p–2p43d, 2p53s–2p53p, 2p53s–2p53p, 3s3p–3p2, 3s23p3-3s3p4, 3s23p–3s3p2,3s23p3–3s3p4和 2p4 (3P)3s–2p4 (3P) 3p跃迁。在这些跃迁中，确定了82条能级和谱线，其中40条能级和谱线是新测量和确定的。在60-100 MeV Cu9+离子轰击Zn靶过程中，对于近对称碰撞中炮弹和靶K壳层空穴产生，实验结果表明，在这个能量范围，不同能量下炮弹和靶K壳空穴相对比率几乎保持不变，且通过2pσ-1sσ 转动耦合，与空穴转移理论预言一致。