Single-photon excitation of K $\alpha$ in heliumlike Kr$^{34+}$ : Results supporting quantum electrodynamics predictions
| Autor: | Epp, S. W., Steinbrügge, R., Bernitt, S., Rudolph, J. K., Beilmann, C., Bekker, H., Müller, A., Versolato, O. O., Wille, H.-C., Yavaş, H., Ullrich, J., Crespo López-Urrutia, J. R. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| DOI: | 10.3204/pubdb-2015-03445 |
| Popis: | Physical review / A 92(2), 020502(2015). doi:10.1103/PhysRevA.92.020502 We study two fundamental transitions from the ground state $^{1}$S$_{0}$ to $^{1}$P$_{1}$ (w line) and $^{3}$P$_{1}$ (y line) in heliumlike Kr$^{34+}$ 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$_{Lit}$(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. Published by APS, College Park, Md. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|