Calculations of atomic polarizability for beryllium using MCDHF method* *Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0402300), the National Natural Science Foundation of China (Grant Nos. 11774292, 11804280, 11874051, and 11864036), the Scientific Research Funding of the Higher Education Institutions of Gansu Province of China (Grant No. 2018A-002), and the Major Project of

Abstract

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 2s2 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 → 2s2 1 S 0 clock transition is determined. The present results agree very well with other available theoretical results.