Laser-stimulated electric quadrupole transitions in the molecular hydrogen ion H2+

TL;DR

This paper calculates laser-induced electric quadrupole transition rates in H2+ ions, considering hyperfine and Zeeman effects, with high-precision nuclear-electron spin coupling constants, aiding molecular spectroscopy and metrology.

Contribution

It provides detailed calculations of E2 transition rates and hyperfine structures in H2+ with unprecedented precision, enhancing understanding of molecular ion spectra.

Findings

Calculated transition rates for many ro-vibrational states

Detailed analysis of hyperfine and Zeeman structures

High-precision nuclear-electron spin coupling constants

Abstract

Molecular hydrogen ions are of metrological relevance due to the possibility of precise theoretical evaluation of their spectrum and of external-field-induced shifts. We report the results of the calculations of the rate of laser-induced electric quadrupole transitions between a large set of ro-vibrational states of ${\rm H_2^+}$. The hyperfine and Zeeman structure of the E2 transition spectrum and the effects of the laser polarization are treated in detail. We also present the nuclear spin-electron spin coupling constants, computed with a precision 10 times higher than previously.