Bibliographic Details
| Title: |
Atomic determination of the nuclear quadrupole moment Q(209Bi) using the multi-configuration Dirac–Hartree–Fock method. |
| Authors: |
Li, Jiguang1 (AUTHOR) li_jiguang@iapcm.ac.cn, Bieroń, Jacek2 (AUTHOR), Godefroid, Michel3 (AUTHOR), Jönsson, Per4 (AUTHOR) |
| Source: |
European Physical Journal D (EPJ D). Dec2025, Vol. 79 Issue 12, p1-8. 8p. |
| Subjects: |
Quadrupole moments, Hyperfine interactions, Quantum chemistry, Electromagnetism, Isotopes, Computational physics, Electron configuration |
| Abstract: |
The multi-configuration Dirac–Hartree–Fock method implemented in the Grasp2018 package was employed to calculate the magnetic dipole hyperfine interaction constants and electric field gradients of levels in the ground configuration of the neutral bismuth atom. Combining the calculated electric field gradient of the ground state with the measured electric quadrupole hyperfine interaction constant, we extracted the nuclear quadrupole moment for the 209 Bi isotope, Q (209 Bi) = - 422 (22) mb. A "world average" value of the nuclear quadrupole moment of this isotope, Q (209 Bi) = - 420 (17) mb, was deduced from the present result combined with a large sample of other theoretical values obtained with elaborate atomic- and molecular-structure calculations. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
