Measurement of line overlap for resonant photopumping of transitions in neonlike ions by nickel-like ions.
Measurement of line overlap for resonant photopumping of transitions in neonlike ions by nickel-like ions.
复制标题
类镍离子对类氖离子跃迁的共振光泵浦线重叠的测量。
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
Nilsen
中科院分区：
文献类型：
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作者：
Elliott;Beiersdorfer;Nilsen
测量了类镍离子{mathrm{Re}^{47+}$，${mathm{ir}}^{49+}$，${mathm{pt}^{50+}$，${mathm{au}^{51+}$和${mathm{Bi}^{55+}$中的3d-4f跃迁能和类Ne离子${mathm{Br}^{25+}$，${mathrm{Kr}}^{26+}$中的2p-4d跃迁能，使用利弗莫尔电子束离子陷阱的${mathm{Rb}^{27+}$和${mathm{Y}}^{29+}$。所研究的离子是基于共振光泵浦的x射线激光方案的候选者，该方案预测类Ne离子中的3p-3s跃迁之间的激光。将测量结果与多组态Dirac-Fock计算结果进行了比较，发现了系统差异。在2512 eV处，铂-Rb对的共振最好，其能量差为0.4ifmmodesmse extpmfi{>0.1 eV，即仅相差160ppm。
A measurement is made of the 3d-4f transition energies in the Ni-like ions ${mathrm{Re}}^{47+}$, ${mathrm{Ir}}^{49+}$, ${mathrm{Pt}}^{50+}$, ${mathrm{Au}}^{51+}$, and ${mathrm{Bi}}^{55+}$ and the 2p-4d transition energies in the Ne-like ions ${mathrm{Br}}^{25+}$, ${mathrm{Kr}}^{26+}$, ${mathrm{Rb}}^{27+}$, and ${mathrm{Y}}^{29+}$ using the Livermore electron-beam ion trap. The ions studied are candidates for an x-ray laser scheme based on resonant photopumping which predicts lasing among the 3p-3s transitions in a Ne-like ion. The results of the measurements are compared to multiconfiguration Dirac-Fock calculations and systematic differences are found. The best resonance is found for the Pt-Rb pair at 2512 eV, whose energies differ by 0.4ifmmodepmelse extpmfi{}0.1 eV, that is, by only 160 ppm.