The Zero-Quantum-Defect Method and the Fundamental Vibrational Interval of H$_2^+$
Abstract
The fundamental vibrational interval of H has been determined to be cm by continuous-wave laser spectroscopy of Stark manifolds of Rydberg states of H with the H ion core in the ground and first vibrationally excited states. Extrapolation of the Stark shifts to zero field yields the zero-quantum-defect positions /, from which ionization energies can be determined. Our new result represents a four-order-of-magnitude improvement compared to earlier measurements. It agrees, within the experimental uncertainty, with the value of 2191.126\,626\,344(17)(100) cm determined in non-relativistic quantum electrodynamic calculations V. Korobov, L. Hilico and J.-Ph. Karr, Phys. Rev. Lett. 118, 233001 (2017) http://doi.org/10.1103/PhysRevLett.118.233001.
Cite
@article{arxiv.2401.09194,
title = {The Zero-Quantum-Defect Method and the Fundamental Vibrational Interval of H$_2^+$},
author = {Ioana Doran and Nicolas Hölsch and Maximilian Beyer and Frédéric Merkt},
journal= {arXiv preprint arXiv:2401.09194},
year = {2024}
}