We present static and dynamical properties of linear vortices in 4He droplets
obtained from Density Functional calculations. By comparing the adsorption
properties of different atomic impurities embedded in pure droplets and in
droplets where a quantized vortex has been created, we suggest that Ca atoms
should be the dopant of choice to detect vortices by means of spectroscopic
experiments.Comment: Typeset using Revtex4, 4 pages and 2 Postscript file
