Accurate CI-MBPT calculation of radiative lifetimes and transition probabilities of neutral lanthanum (La I) odd states with J = 3/2
Abstract
In this work, an accurate calculation of radiative lifetimes and transition probabilities of the first 21 odd states with a total angular momentum J = 3/2 was performed for La I using configuration-interaction many-body perturbation theory (CI-MBPT). A technique to obtain correct transition amplitudes was devised for pairs of states with substantial mixing that improved the theoretical accuracy. The results were compared to known experimental and theoretical data for the considered transitions. It has been shown that the transition data calculated with CI-MBPT and with corrections for pairs of mixed states are in good agreement with the latest experimental data of Den Hartog et al, 2015 J. Phys. B: At. Mol. Phys. 48, 155 001, better than other theoretical results. The transition data can find many applications in astrophysics, and the CI-MBPT formalism with mixing correction is applicable to other atoms similar to or more complex than La I.
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1726205
- Report Number(s):
- LA-UR-20-23523
Journal ID: ISSN 1402-4896
- Grant/Contract Number:
- 89233218CNA000001; 20180125ER
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physica Scripta (Online)
- Additional Journal Information:
- Journal Name: Physica Scripta (Online); Journal Volume: 95; Journal Issue: 10; Journal ID: ISSN 1402-4896
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Neutral lanthanum, line strength, transition probability, radiative lifetime
Citation Formats
Filin, Dmytro, and Savukov, Igor M. Accurate CI-MBPT calculation of radiative lifetimes and transition probabilities of neutral lanthanum (La I) odd states with J = 3/2. United States: N. p., 2020.
Web. doi:10.1088/1402-4896/abb421.
Filin, Dmytro, & Savukov, Igor M. Accurate CI-MBPT calculation of radiative lifetimes and transition probabilities of neutral lanthanum (La I) odd states with J = 3/2. United States. https://doi.org/10.1088/1402-4896/abb421
Filin, Dmytro, and Savukov, Igor M. Wed .
"Accurate CI-MBPT calculation of radiative lifetimes and transition probabilities of neutral lanthanum (La I) odd states with J = 3/2". United States. https://doi.org/10.1088/1402-4896/abb421. https://www.osti.gov/servlets/purl/1726205.
@article{osti_1726205,
title = {Accurate CI-MBPT calculation of radiative lifetimes and transition probabilities of neutral lanthanum (La I) odd states with J = 3/2},
author = {Filin, Dmytro and Savukov, Igor M.},
abstractNote = {In this work, an accurate calculation of radiative lifetimes and transition probabilities of the first 21 odd states with a total angular momentum J = 3/2 was performed for La I using configuration-interaction many-body perturbation theory (CI-MBPT). A technique to obtain correct transition amplitudes was devised for pairs of states with substantial mixing that improved the theoretical accuracy. The results were compared to known experimental and theoretical data for the considered transitions. It has been shown that the transition data calculated with CI-MBPT and with corrections for pairs of mixed states are in good agreement with the latest experimental data of Den Hartog et al, 2015 J. Phys. B: At. Mol. Phys. 48, 155 001, better than other theoretical results. The transition data can find many applications in astrophysics, and the CI-MBPT formalism with mixing correction is applicable to other atoms similar to or more complex than La I.},
doi = {10.1088/1402-4896/abb421},
journal = {Physica Scripta (Online)},
number = 10,
volume = 95,
place = {United States},
year = {Wed Sep 09 00:00:00 EDT 2020},
month = {Wed Sep 09 00:00:00 EDT 2020}
}
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