Single-photon excitation of Kα in heliumlike Kr34+: Results supporting quantum electrodynamics predictions
Single-photon excitation of Kα in heliumlike Kr34+: Results supporting quantum electrodynamics predictions
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DOI：
10.1103/physreva.92.020502
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发表时间：
2015-08-12
影响因子：
2.9
通讯作者：
Lopez-Urrutia, J. R. Crespo
中科院分区：
文献类型：
--
作者：
Epp, S. W.;Steinbruegge, R.;Lopez-Urrutia, J. R. Crespo
在PETRA III装置上，利用电子束离子阱和单色X射线共振单光子激发，研究了类氦Kr 34+从基态S-1（0）到P-1（1）（w线）和P-3（1）（y线）的两个基本跃迁.我们对跃迁能E（w）= 13114.47（14）eV和E（y）= 13026.15（14）eV的计算结果与量子电动力学计算非常一致，但对w的计算结果与迄今报道的实验结果（E）在bar（Lit）（w）= 13115.15（17）eV上的平均值不一致。不依赖于任何能量校准，我们得到的值E（w）/E（y）= 1.006 780（7），也与预测一致。
We study two fundamental transitions from the ground state S-1(0) to P-1(1) (w line) and P-3(1) (y line) in heliumlike Kr34+ by resonant single-photon excitation using an electron-beam ion trap and monochromatic x rays at PETRA III. Our results for the transition energies E(w) = 13 114.47(14) eV and E(y) = 13 026.15(14) eV are in excellent agreement with quantum electrodynamics calculations, but disagree for w with the average of the hitherto reported experimental results (E) over bar (Lit)(w) = 13 115.15(17) eV. Independently of any energy calibration, we obtain a value E(w)/E(y) = 1.006 780(7), also in consistency with predictions.