THEORETICAL STUDYING SPECTRAL CHARACTERISTICS OF Ne-LIKE IONS ON THE BASIS OF OPTIMIZED RELATIVISTIC MANY-BODY PERTURBATION THEORY
نویسندگان
چکیده
منابع مشابه
Development of Many-Body Perturbation Theory
The development of standard MBPT for single-reference and multi-reference cases is reviewed, and its extension to the relativistic case in the form of the Dirac-Coulomb-Breit (DCB) approximation is described. The latter scheme is non-covariant, and the recent development of a fully covariant MBPT scheme is discussed. This is based upon a new scheme for quantumelectrodynamical (QED) calculations...
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Excitation energies for 3l-4l8 particle-hole states of Ni-like ions are determined to second order in relativistic many body perturbation theory. The calculations start from a closed-shell Dirac-Fock potential, and include second-order Coulomb and Breit-Coulomb interactions. Retarded electric-dipole matrix elements ~in length and velocity forms! are calculated in second order for transitions fr...
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Reduced matrix elements and transition rates are calculated for all magnetic dipole (M1) transitions within 2l2l0 con gurations and for some 2l3l0 2l2l0 transitions in Be-like ions with nuclear charges ranging from Z = 4 to 100. Many-body perturbation theory (MBPT), including the Breit interaction, is used to evaluate retarded M1 matrix elements. The calculations start with a (1s) Dirac-Fock po...
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ژورنال
عنوان ژورنال: Photoelectronics
سال: 2020
ISSN: 0235-2435
DOI: 10.18524/0235-2435.2019.28.195367