Journal
CHINESE PHYSICS B
Volume 30, Issue 4, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1674-1056/abd92d
Keywords
polarizabilities; MCDHF; blackbody radiation shift
Categories
Funding
- National Key Research and Development Program of China [2017YFA0402300]
- National Natural Science Foundation of China [11774292, 11804280, 11874051, 11864036]
- Scientific Research Funding of the Higher Education Institutions of Gansu Province of China [2018A-002]
- Major Project of the Research Ability Promotion Program for Young Scholars of Northwest Normal University of China [NWNU-LKQN2019-5]
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A new program for calculating polarizabilities using the fully relativistic multiconfiguration Dirac-Hartree-Fock method has been developed. The program was used to calculate the static electric-dipole polarizabilities of beryllium and determine the blackbody radiation shift of a clock transition, with results in good agreement with other theoretical findings.
Based on the fully relativistic multiconfiguration Dirac-Hartree-Fock (MCDHF) method and the corresponding program package GRASP2018, a new program for calculating the polarizabilities is developed. As the first application, the static electric-dipole polarizabilities of the ground state 2s(2) (1) S (0) and excited state 2s2p (3) P (0) of beryllium are calculated. By means of these polarizabilities, the blackbody radiation (BBR) shift of the 2s2p (3) P (0) -> 2s(2) (1) S (0) clock transition is determined. The present results agree very well with other available theoretical results.
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