Laser spectroscopy of the y7PoJ states of Cr I
Date
2022-03-16
Journal Title
Journal ISSN
Volume Title
Publisher
Physical Review A
Abstract
Here we report measured and calculated values of decay rates of the 3d4(5D)4s4p(3Po)y7Po2,3,4 states of Cr i. The decay rates are measured using time-correlated single-photon counting with roughly 1% total uncertainty. In addition, the isotope shifts for transitions between these states and the ground state are measured by laser induced fluorescence to roughly 0.5% uncertainty. The decay rate calculations are carried out by a hybrid approach that combines configuration interaction and the linearized coupled-cluster method (CI+all-order method). The measurements provide a much needed precision benchmark for testing the accuracy of the CI+all-order approach for such complicated systems with six valence electrons, allowing us to significantly expand its applicability. These measurements also demonstrate operation of a cryogenic buffer gas beam source for future cold molecule experiments.
Description
This article was originally published in Physical Review A. The version of record is available at: https://doi.org/10.1103/PhysRevA.105.032812
Keywords
Citation
Norrgard, E. B., D. S. Barker, S. P. Eckel, S. G. Porsev, C. Cheung, M. G. Kozlov, I. I. Tupitsyn, and M. S. Safronova. “Laser Spectroscopy of the Y7PoJ States of Cr I.” Physical Review A 105, no. 3 (March 16, 2022): 032812. https://doi.org/10.1103/PhysRevA.105.032812.