Two-component nanoplasmas generated by strong-field ionization of doped helium nanodroplets are studied in a pump-probe experiment using few-cycle laser pulses in combination with molecular dynamics simulations. High yields of helium ions and a pronounced, droplet size-dependent resonance structure in the pump-probe transients reveal the evolution of the dopant-induced helium nanoplasma. The pump-probe dynamics is interpreted in terms of strong inner ionization by the pump pulse and resonant heating by the probe pulse which controls the final charge states detected via the frustration of electron-ion recombination.
@article{arxiv.1203.1245,
title = {Evolution of dopant-induced helium nanoplasmas},
author = {S. R. Krishnan and Ch. Peltz and L. Fechner and V. Sharma and M. Kremer and B. Fischer and N. Camus and T. Pfeifer and J. Jha and M. Krishnamurthy and C. -D. Schroeter and J. Ullrich and F. Stienkemeier and R. Moshammer and Th. Fennel and M. Mudrich},
journal= {arXiv preprint arXiv:1203.1245},
year = {2015}
}