Electron-β-Nuclear Spectroscopy of Atomic Systems and Many-Body Perturbation Theory Approach to Computing β-Decay Parameters

2021 ◽  
pp. 59-89
Author(s):  
Olga Yu. Khetselius ◽  
Valentin B. Ternovsky ◽  
Yulia V. Dubrovskaya ◽  
Andrey A. Svinarenko
Keyword(s):  
Perturbation Theory ◽  
Nuclear Spectroscopy ◽  
Theory Approach ◽  
Many Body ◽  
Β Decay ◽  
Atomic Systems ◽  
Many Body Perturbation Theory ◽  
Decay Parameters

scholarly journals Parity non-conservation effect in heavy atomic systems within relativistic many-body perturbation theory: Advanced data

2019 ◽  
Vol 1289 ◽  
pp. 012025
Author(s):  
O Yu Khetselius ◽  
V B Ternovsky ◽  
A A Svinarenko ◽  
Yu V Dubrovskaya ◽  
I N Serga
Keyword(s):  
Perturbation Theory ◽  
Many Body ◽  
Atomic Systems ◽  
Many Body Perturbation Theory

scholarly journals Relativistic Configuration-Interaction and Perturbation Theory Calculations for Heavy Atoms

Atoms ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 104
Author(s):  
Igor M. Savukov ◽  
Dmytro Filin ◽  
Pinghan Chu ◽  
Michael W. Malone
Keyword(s):  
Perturbation Theory ◽  
Configuration Interaction ◽  
Dipole Moments ◽  
Many Body ◽  
Atomic Systems ◽  
Heavy Atoms ◽  
Isotopic Shifts ◽  
Relativistic Configuration ◽  
Many Body Perturbation Theory ◽  
Relativistic Configuration Interaction

Heavy atoms present challenges to atomic theory calculations due to the large number of electrons and their complicated interactions. Conventional approaches such as calculations based on Cowan’s code are limited and require a large number of parameters for energy agreement. One promising approach is relativistic configuration-interaction and many-body perturbation theory (CI-MBPT) methods. We present CI-MBPT results for various atomic systems where this approach can lead to reasonable agreement: La I, La II, Th I, Th II, U I, Pu II. Among atomic properties, energies, g-factors, electric dipole moments, lifetimes, hyperfine structure constants, and isotopic shifts are discussed. While in La I and La II accuracy for transitions is better than that obtained with other methods, more work is needed for actinides.

scholarly journals Inner‐Shell Absorption Lines of Fevi–Fexvi: A Many‐Body Perturbation Theory Approach

2006 ◽  
Vol 641 (2) ◽  
pp. 1227-1232 ◽  
Author(s):  
Ming F. Gu ◽  
Tomer Holczer ◽  
Ehud Behar ◽  
Steven M. Kahn
Keyword(s):  
Perturbation Theory ◽  
Absorption Lines ◽  
Theory Approach ◽  
Many Body ◽  
Many Body Perturbation Theory
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