Journalartikel
Autorenliste: Silwal, R.; Lapierre, A.; Gillaspy, J. D.; Dreiling, J. M.; Blundell, S. A.; Dipti; Borovik, A., Jr.; Gwinner, G.; Villari, A. C. C.; Ralchenko, Yu; Takacs, E.
Jahr der Veröffentlichung: 2020
Zeitschrift: Physical review A
Bandnummer: 101
Heftnummer: 6
ISSN: 2469-9926
eISSN: 2469-9934
DOI Link: https://doi.org/10.1103/PhysRevA.101.062512
Verlag: American Physical Society
Abstract:
The electron-beam ion trap (EBIT) at the National Institute of Standards and Technology (NIST) was employed for the measurement and detailed analysis of the delta lambda(Xe-124, Xe-136) isotopic shifts of the Al-like 3s(2)3p P-2(1/2)-3s(2)3p P-2(3/2), Al-like 3s(2)3p (2)(P1/2)-3s(2)3d D-2(3/2), Mg-like 3s(2) S-1(0)-3s3p P-1(1), Mg-like 3s(2) S-1(0)-3s3p P-3(1), Na-like 3s(2) S-2(1/2) -3p P-2(1/2) (D-1), and Na-like 3s S-2(1/2)-3p P-2(3/2) (D-2) transitions. Systematic analysis revealed possible line blends and contributing experimental uncertainties. Highly accurate atomic-structure calculations were conducted and used to determine the delta < r(2)>(136,124) difference in the mean-square nuclear charge radii of the delta < r(2)>(136,124 )two xenon isotopes. In the present work, r(2) of 0.276 +/- 0.030 fm(2) was obtained from the weighted average of the Na-like D-1, Mg-like 3s(2)-3s3p and Al-like 3s(2)3p-3s(2)3p and 3s(2)3p-3s(2)3d transitions. This result confirms the value previously determined from the Na-like D-1 transition of 0.269 +/- 0.042 fm(2). The uncertainty of our result is half of that of previous results for the same isotopes obtained from x-ray spectroscopy of muonic atoms, laser spectroscopy of neutral xenon atoms, and a global evaluation of charge radii. Our result is slightly outside the uncertainty of the value obtained from a King plot analysis of comparable precision. The present work illustrates that extreme-ultraviolet spectroscopy of highly charged ions is a viable approach for measurements of charge nuclear radii differences and can be used to benchmark conventional methods.
Zitierstile
Harvard-Zitierstil: Silwal, R., Lapierre, A., Gillaspy, J., Dreiling, J., Blundell, S., Dipti, et al. (2020) Determination of the isotopic change in nuclear charge radius from extreme-ultraviolet spectroscopy of highly charged ions of Xe, Physical Review A (atomic, molecular, and optical physics and quantum information), 101(6), Article 062512. https://doi.org/10.1103/PhysRevA.101.062512
APA-Zitierstil: Silwal, R., Lapierre, A., Gillaspy, J., Dreiling, J., Blundell, S., Dipti, Borovik, A., Gwinner, G., Villari, A., Ralchenko, Y., & Takacs, E. (2020). Determination of the isotopic change in nuclear charge radius from extreme-ultraviolet spectroscopy of highly charged ions of Xe. Physical Review A (atomic, molecular, and optical physics and quantum information). 101(6), Article 062512. https://doi.org/10.1103/PhysRevA.101.062512
Schlagwörter
ENERGY-LEVELS; PERTURBATION-THEORY CALCULATIONS; RECOIL CORRECTIONS; REFORMULATION; SHIFT; XENON
