A theoretical study of the C- 4So_3/2 and 2Do_{3/2,5/2} bound states and C ground configuration: fine and hyperfine structures, isotope shifts and transition probabilities

TL;DR

This theoretical study uses ab initio methods to analyze the fine and hyperfine structures, isotope shifts, and transition probabilities of specific excited states of carbon, achieving high accuracy in wave functions and related properties.

Contribution

It provides highly accurate calculations of energy thresholds, isotope shifts, hyperfine structures, and transition probabilities for carbon's excited states using multi-configuration Hartree-Fock methods.

Findings

Detachment thresholds calculated with ~0.5% accuracy.

Hyperfine structures determined with ~0.1 MHz precision.

Transition probabilities estimated for intra-configuration transitions.

Abstract

This work is an ab initio study of the 2p3 4So_3/2, and 2Do_{3/2,5/2} states of C- and 2p2 3P_{0,1,2}, 1D_2, and 1S_0 states of neutral carbon. We use the multi-configuration Hartree-Fock approach, focusing on the accuracy of the wave function itself. We obtain all C- detachment thresholds, including correlation effects to about 0.5%. Isotope shifts and hyperfine structures are calculated. The achieved accuracy of the latter is of the order of 0.1 MHz. Intra-configuration transition probabilities are also estimated.