Optimized Relativistic Dirac-fock Approach to Calculating the Hyperfine Line Shift and Broadening for Heavy Atoms in the Buffer Gas
Year: 2017
Type: article
Abstract: It is presented a new consistent relativistic approach to description of the energetic and spectral properties of the heavy atoms in an atmosphere of the inert gases, based on the atomic gauge-invariant relativistic perturbation theory with the optimized Dirac-Fock zeroth approximation with density functional correlation potential and the exchange perturbation theory for construction of the interatomic potential function. As illustration it is applied to calculating the interatomic potentials, hyperfine structure line collision shift and broadening for alkali and thallium atoms, in an atmosphere of the buffer inert gas. It is shown that an accurate accounting of relativistic and exchange-correlation provides physically reasonable description of the energetic and spectral properties of the heavy atoms in an atmosphere of the inert gases.
Source: Photoelectronics
Authors: V. F. Mansarliysky, E. V. Ternovsky, A. V. Ignatenko, E. L. Ponomarenko
Institution: Odessa State Environmental University
Language: English
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2906811753