Single and Double Resonance Microwave Spectroscopy in Superfluid $^4$He Clusters
Chemical Physics
2009-10-31 v2
Abstract
Purely rotational transitions of a molecule, such as HCCCN, embedded in large He clusters have been detected for the first time. The saturation behavior shows that, in contrast to previous expectations, the microwave line profiles are dominated by inhomogeneous broadening mechanisms. Spectral holes and peaks produced by microwave-microwave double resonance have widths comparable to those of single resonance lines, indicating that relaxation occurs among quantum states of the inhomogeneous distribution of each rotational level, at a rate approximately 10 times faster than rotationally inelastic relaxation.
Cite
@article{arxiv.physics/9905022,
title = {Single and Double Resonance Microwave Spectroscopy in Superfluid $^4$He Clusters},
author = {I. Reinhard and C. Callegari and A. Conjusteau and K. K. Lehmann and G. Scoles},
journal= {arXiv preprint arXiv:physics/9905022},
year = {2009}
}
Comments
4 pages, with 2 figures. To be published in Phys. Rev. Lett