Resonant heating of a cluster plasma by intense laser light.
The heating of a single argon (Ar) cluster by a strong laser field is studied using an electrostatic particle-in-cell code for a range of intensities and cluster sizes. Heating is dominated by a nonlinear resonant absorption process involving energetic electrons transiting through the cluster. This process gives rise to a threshold in field strength for strong absorption and controls the dielectric properties of the cluster.
Taguchi
Toshihiro
T
Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA.
Antonsen
Thomas M
TM
Milchberg
Howard M
HM