Sub-ppb measurement of a fundamental band rovibrational transition in HD
Atomic Physics
2020-07-14 v1 Chemical Physics
Abstract
We report a direct measurement of the 0-1 R(0) vibrational transition frequency in ground-state hydrogen deuteride (HD) using infrared-ultraviolet double resonance spectroscopy in a molecular beam. Ground-state molecules are vibrationally excited using a frequency comb referenced continuous-wave infrared laser, and the excited molecules are detected via state-selective ionization with a pulsed ultraviolet laser. We determine an absolute transition frequency of 111 448 815 477(13) kHz. The 0.12 parts-per-billion (ppb) uncertainty is limited primarily by the residual first-order Doppler shift.
Keywords
Cite
@article{arxiv.2002.09333,
title = {Sub-ppb measurement of a fundamental band rovibrational transition in HD},
author = {Arthur Fast and Samuel A. Meek},
journal= {arXiv preprint arXiv:2002.09333},
year = {2020}
}
Comments
5 pages, 4 figures