Abstract

A possible approach to obtain a precise experimental data on the atomic structure of highly charged ions is considered. Since the key point determining measurement accuracy is the presence of reference lines with precisely known wavelengths, it is proposed first to to use hydrogen-like reference lines for precise measurements of the helium-like resonant transition and their dielectronic satellites. Then in turn these lines, which exist in the plasma over a wide temperature range, can be used as the reference in the wavelength measurement for other ions. The problems associated with the creation of the plasma conditions under which the reference and measured lines have comparable intensities are discussed. The irradiation of minerals with laser pulses, which, in terms of their chemical composition, are a set of elements with average 15 < Z < 30 and light Z < 15 nuclear charges, is proposed. Several experimental schemes to measure the wavelengths of the spectral lines of multiply charged calcium ions with an expected error of up to 0.125 mÅ are considered as an example.

中文翻译：

---

精确测量He和Li形Ca离子中主壳层跃迁的波长的方法

摘要

考虑了一种获得有关高电荷离子原子结构的精确实验数据的可行方法。由于确定测量精度的关键是存在精确已知波长的参考线，因此建议首先使用类氢的参考线来精确测量类氦的共振跃迁及其双电子卫星。然后依次将这些在宽温度范围内存在于等离子体中的谱线用作其他离子波长测量的参考。讨论了与在参考线和测量线具有可比较强度的等离子体条件的产生有关的问题。用激光脉冲照射矿物，就其化学成分而言，是一组平均元素含量小于15的元素。提出了Z <30和轻Z <15核电荷。以测量误差高达0.125mÅ的多电荷钙离子光谱线波长的几种实验方案为例。