Explosions of large Xe clusters (N∼11000) irradiated by femtosecond pulses of 850eV x-ray photons focused to an intensity of up to 1017W/cm2 from the Linac Coherent Light Source were investigated experimentally. Measurements of ion charge-state distributions and energy spectra exhibit strong evidence for the formation of a Xe nanoplasma in the intense x-ray pulse. This x-ray produced Xe nanoplasma is accompanied by a three-body recombination and hydrodynamic expansion. These experimental results appear to be consistent with a model in which a spherically exploding nanoplasma is formed inside the Xe cluster and where the plasma temperature is determined by photoionization heating.
ASJC Scopus subject areas
- Physics and Astronomy(all)