Breit and QED effects on the 3d9 D3/2 2 →2D5/2 transition energy in Colike ions
(2018) In Physical Review A 98(1). Abstract
The multiconfiguration DiracHartreeFock theory is used to calculate the 3d9D3/22→2D5/2 transition energy for Colike ions with Z=28100. We investigate how electron correlation, frequencyindependent and dependent Breit interactions, as well as QED corrections vary along the sequence. The wellunderstood frequencyindependent Breit contribution has the largest contribution for all ions. Among the corrections to this, correlation decreases rapidly with Z, the frequencydependent Breit contribution is important especially for highZ ions, and the selfenergy contribution to the QED becomes the largest correction already for Z>50. We evaluate and compare results for the Selfenergy in three different approximations, (i) the approach... (More)
The multiconfiguration DiracHartreeFock theory is used to calculate the 3d9D3/22→2D5/2 transition energy for Colike ions with Z=28100. We investigate how electron correlation, frequencyindependent and dependent Breit interactions, as well as QED corrections vary along the sequence. The wellunderstood frequencyindependent Breit contribution has the largest contribution for all ions. Among the corrections to this, correlation decreases rapidly with Z, the frequencydependent Breit contribution is important especially for highZ ions, and the selfenergy contribution to the QED becomes the largest correction already for Z>50. We evaluate and compare results for the Selfenergy in three different approximations, (i) the approach implemented in the grasp2k package, (ii) the method based on Welton's concept and (iii) a model operator approach recently developed by Shabaev and coworkers. Through comparison with experimental values, it seems that the third set of results have the best agreement with experiments, but the difference from experiments for highZ ions, is around 0.03%0.04%, and therefore our results are outside the error bars of the experiments.
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 author
 Si, R.; Guo, X. L.; Brage, T. ^{LU} ; Chen, C. Y.; Hutton, R. and Fischer, C. Froese
 organization
 publishing date
 20180713
 type
 Contribution to journal
 publication status
 published
 subject
 in
 Physical Review A
 volume
 98
 issue
 1
 publisher
 American Physical Society
 external identifiers

 scopus:85050083067
 ISSN
 24699926
 DOI
 10.1103/PhysRevA.98.012504
 language
 English
 LU publication?
 yes
 id
 0e5afecfdb4449a1bb4304aec805eb92
 date added to LUP
 20180802 08:13:41
 date last changed
 20190917 04:36:29
@article{0e5afecfdb4449a1bb4304aec805eb92, abstract = {<p>The multiconfiguration DiracHartreeFock theory is used to calculate the 3d9D3/22→2D5/2 transition energy for Colike ions with Z=28100. We investigate how electron correlation, frequencyindependent and dependent Breit interactions, as well as QED corrections vary along the sequence. The wellunderstood frequencyindependent Breit contribution has the largest contribution for all ions. Among the corrections to this, correlation decreases rapidly with Z, the frequencydependent Breit contribution is important especially for highZ ions, and the selfenergy contribution to the QED becomes the largest correction already for Z>50. We evaluate and compare results for the Selfenergy in three different approximations, (i) the approach implemented in the grasp2k package, (ii) the method based on Welton's concept and (iii) a model operator approach recently developed by Shabaev and coworkers. Through comparison with experimental values, it seems that the third set of results have the best agreement with experiments, but the difference from experiments for highZ ions, is around 0.03%0.04%, and therefore our results are outside the error bars of the experiments.</p>}, articleno = {012504}, author = {Si, R. and Guo, X. L. and Brage, T. and Chen, C. Y. and Hutton, R. and Fischer, C. Froese}, issn = {24699926}, language = {eng}, month = {07}, number = {1}, publisher = {American Physical Society}, series = {Physical Review A}, title = {Breit and QED effects on the 3d9 D3/2 2 →2D5/2 transition energy in Colike ions}, url = {http://dx.doi.org/10.1103/PhysRevA.98.012504}, volume = {98}, year = {2018}, }