Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

First Observation of the Pure Long-Range 1u State of an Alkali Dimer by Photoassociative spectroscopy

Published

Author(s)

X Wang, H Wang, P L. Gould, W C. Stwalley, Eite Tiesinga, Paul S. Julienne

Abstract

The pure long-range 1u state of an alkali dimer is observed for the first time in 39K2 using photoassociative spectroscopy of ultracold atoms. High-resolution spectra for vibrational levels v = O to 7 are recorded by resonance-enhanced two-photon ionization. Strong rotation-hyperfine couplings are observed. Major molecular constants and a hyperfine structure analysis are presented. This 1u state is useful as a novel ungerade Franck-Condon window at large internuclear distance for studies of highly-excited long-range interactions.
Citation
Physical Review A (Atomic, Molecular and Optical Physics)
Volume
57
Issue
6

Keywords

alkali dimer, laser cooling, photassociative spectroscopy, potassium molecule, ultracold atoms

Citation

Wang, X. , Wang, H. , Gould, P. , Stwalley, W. , Tiesinga, E. and Julienne, P. (1998), First Observation of the Pure Long-Range 1<sub>u</sub> State of an Alkali Dimer by Photoassociative spectroscopy, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed April 16, 2024)
Created May 31, 1998, Updated October 12, 2021