Hyperfine components of all rovibrational quadrupole transitions in the H${}_2$ and D${}_2$ molecules

Abstract

We report results of a theoretical investigation of hyperfine interactions in two homonuclear isotopologues of the hydrogen molecule: H${}_2$ and D${}_2$. We present a set of hyperfine coupling constants: spin-rotation, spin-spin dipole and, in the case of the D${}_2$ molecule, electric quadrupole coupling constants for all bound states of the two isotopologues in their ground electronic $X^1{\Sigma }_g^{+}$ state. We provide a list of positions and intensities of 220 997 hyperfine components of 16 079 rovibrational quadrupole transitions of the O, Q and S branches. The positions and intensities of the hyperfine components are necessary for a reliable interpretation of accurate measurements of rovibrational transition frequencies in H${}_2$ and D${}_2$, which are used for tests of the quantum electrodynamics of molecules and searches for new physics beyond the Standard Model.

References in corpus (4)

• Benchmarking theory with an improved measurement of the ionization and dissociation energies of H${}_2$
• Constraints on extra dimensions from precision molecular spectroscopy
• Complete ${\alpha }^{6}m$ corrections to the ground state of H${}_2$
• Hyperfine structure in the HD molecule

Cited by in corpus (3)

• Hyperfine structure of the first rotational level in H${}_2$, D${}_2$ and HD molecules and the deuteron quadrupole moment
• Improved Ionization and Dissociation Energies of the Deuterium Molecule
• The quasi bound spectrum of H2