Observation of Vortices in Helium Droplets | |
Abstract ID | 10 |
Presenter | Curtis F. Jones |
Presentation Type | Poster |
Full Author List | Curtis Jones, Charles Bernando, Luis Gomez, Rico M. P. Tanyag, Camila Bacellar, James Cryan, Kenneth Ferguson, Sebastian Schorb |
Affiliations | University of Southern California |
Category | |
Abstract |
In this presentation, the observation of vortices in He droplets is discussed. For this purpose, droplets have been doped with a large number of Xe atoms and imaged via X-ray diffraction at the Linac Coherent Light Source at SLAC National Accelerator Laboratory. Quantum vortices in He droplets are expected to attract Xe atoms and serve as nucleation centers for the growth of Xe clusters. Therefore, obtaining the positions of clusters inside individual droplets may help in deducing the number and configuration of vortices within. In small droplets of about 200 nm in diameter, certain diffraction images show clear interference patterns with characteristic contributions from both the droplet and embedded Xe clusters. We have created simulated diffraction images, using a model of scattering from multiple clusters (He droplet and several Xe clusters), which gave very good agreement with some characteristic experimental images. These results indicate the presence of several Xe clusters separated by ~100 nm within the droplet, consistent https://conf-slac.stanford.edu/ssrl-lcls-2013/sites/conf-slac.stanford.e... |
Footnotes | |
Funding Acknowledgement |