Journalartikel
Autorenliste: Wang, S. X.; Huang, Z. K.; Wen, W. Q.; Ma, W. L.; Wang, H. B.; Schippers, S.; Wu, Z. W.; Kozhedub, Y. S.; Kaygorodov, M. Y.; Volotka, A. V.; Wang, K.; Zhang, C. Y.; Chen, C. Y.; Liu, C.; Huang, H. K.; Shao, L.; Mao, L. J.; Ma, X. M.; Li, J.; Tang, M. T.; Yan, K. M.; Zhou, Y. B.; Yuan, Y. J.; Yang, J. C.; Zhang, S. F.; Ma, X.; Zhu, L. F.
Jahr der Veröffentlichung: 2022
Zeitschrift: Physical review A
Bandnummer: 106
Heftnummer: 4
ISSN: 2469-9926
eISSN: 2469-9934
Open Access Status: Green
DOI Link: https://doi.org/10.1103/PhysRevA.106.042808
Verlag: American Physical Society
Abstract:
High-precision spectroscopy of the low-lying dielectronic resonances in fluorine-like Ni19+ ions was studied by employing the electron-ion merged-beams method at the heavy-ion storage ring CSRm. The measured dielectronic-recombination (DR) resonances are identified by comparison with relativistic calculations utilizing the flexible atomic code. The lowest-energy resonance at about 86 meV is due to DR via the (2s2p6[2S1/2]6s)J=1 intermediate state. The position of this resonance could be determined within an experimental uncertainty of as low as +/- 4 meV. The binding energy of the 6s Rydberg electron in the resonance state was calculated using two different approaches, the multiconfigurational Dirac-Hartree-Fock (MCDHF) method and the stabilization method (SM). The sum of the experimental (2s2p6[2S1/2]6s)J=1 resonance energy and the theoretical 6s binding energies from the MCDHF and SM calculations yields the following values for the 2s22p5 2P3/2 -> 2s2p6 2S1/2 transition energy: 149.056(4)exp(20)theo and 149.032(4)exp(6)theo, respectively. The theoretical calculations reveal that second-order QED and third-order correlation effects contribute together about 0.1 eV to the total transition energy. The present precision DR spectroscopic measurement builds a bridge which enables comparisons between different theories.
Zitierstile
Harvard-Zitierstil: Wang, S., Huang, Z., Wen, W., Ma, W., Wang, H., Schippers, S., et al. (2022) Determination of the 2s22p5-2s2p6 transition energy in fluorine-like nickel utilizing a low-lying dielectronic resonance, Physical review A, 106(4), Article 042808. https://doi.org/10.1103/PhysRevA.106.042808
APA-Zitierstil: Wang, S., Huang, Z., Wen, W., Ma, W., Wang, H., Schippers, S., Wu, Z., Kozhedub, Y., Kaygorodov, M., Volotka, A., Wang, K., Zhang, C., Chen, C., Liu, C., Huang, H., Shao, L., Mao, L., Ma, X., Li, J., ...Zhu, L. (2022). Determination of the 2s22p5-2s2p6 transition energy in fluorine-like nickel utilizing a low-lying dielectronic resonance. Physical review A. 106(4), Article 042808. https://doi.org/10.1103/PhysRevA.106.042808
Schlagwörter
F-I; LAMB SHIFT; PHYSICS; STORAGE-RING
