QED calculations of energy levels of heliumlike ions with 5=Z=30

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10453232" target="_blank" >RIV/00216208:11320/22:10453232 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=~3nTnUnxvA" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=~3nTnUnxvA</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.106.022815" target="_blank" >10.1103/PhysRevA.106.022815</a>

Result language
angličtina
Original language name
QED calculations of energy levels of heliumlike ions with 5=Z=30
Original language description
A calculation of two-electron QED effects to all orders in the nuclear binding strength parameter Z alpha is presented for the ground and n = 2 excited states of heliumlike ions. After subtracting the first terms of the Z alpha expansion from the all-order results, we identify the higher-order QED effects of order m alpha 7 and higher. Combining the higher-order remainder with the results complete through order m alpha 6 from Yerokhin and Pachucki [Phys. Rev. A 81, 022507 (2010)], we obtain the most accurate theoretical predictions for the ground and nonmixing n = 2 states of heliumlike ions with Z = 5-30. For the mixing 2 1P1 and 2 3P1 states, we extend the previous calculation by evaluating the higher-order mixing correction and show that it defines the uncertainty of theoretical calculations in the LS coupling for Z > 10.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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