Multi-Configuration Dirac–Hartree–Fock Calculations of Pr<sup>9+</sup> and Nd<sup>10+</sup>: Configuration Resolution and Probing Fine-Structure Constant Variation

Multi-Configuration Dirac–Hartree–Fock Calculations of Pr<sup>9+</sup> and Nd<sup>10+</sup>: Configuration Resolution and Probing Fine-Structure Constant Variation

We present high-precision multi-configuration Dirac–Hartree–Fock (MCDHF) calculations for the metastable states of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>Pr</mi><mrow><mn&...

Full description

Saved in:
Bibliographic Details
Main Authors: Songya Zhang, Cunqiang Wu, Chenzhong Dong, Xiaobin Ding
Format: Article
Language:English
Published: MDPI AG 2025-06-01
Series:Atoms
Subjects:
energy levels
landé <i>g</i> factor
hyperfine interaction constants
breit interaction
multi-configuration dirac–hartree–fock
Online Access:https://www.mdpi.com/2218-2004/13/6/54
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present high-precision multi-configuration Dirac–Hartree–Fock (MCDHF) calculations for the metastable states of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>Pr</mi><mrow><mn>9</mn><mo>+</mo></mrow></msup></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>Nd</mi><mrow><mn>10</mn><mo>+</mo></mrow></msup></semantics></math></inline-formula> ions, systematically investigating their energy levels, transition properties, Landé <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>g</mi><mi>J</mi></msub></semantics></math></inline-formula> factors, and hyperfine interaction constants. Our results show excellent agreement with available experimental data and theoretical benchmarks, while resolving critical configuration assignment discrepancies through detailed angular momentum coupling analysis. The calculations highlight the significant role of Breit interaction and provide the first theoretical predictions of electric quadrupole hyperfine constants (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>B</mi><mi>hfs</mi></msub></semantics></math></inline-formula>). These findings deliver essential atomic data for the development of next-generation optical clocks and establish lanthanide highly charged ions as exceptional candidates for precision tests of fundamental physics.
ISSN:2218-2004

Similar Items