ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A high-density source of liquid droplets has been developed and characterized for use in laser interaction studies. Mie scattering and attenuation measurements show that droplets with a radius of (0.5±0.1) μm and atomic densities of 1019 atoms/cm3 can be produced. These densities are comparable to those of cluster media used in laser interaction experiments. The droplet spray therefore provides a way to produce particles sized between clusters and macroscopic solids. Lower density (1016 atoms/cm3) sprays can also be produced and these can be electrostatically split to provide smaller droplets with a radius of (0.3±0.1) μm. Varying the aperture diameter, through which the spray is formed, controls the spray density and droplet size. Preliminary laser-plasma interaction studies with the spray show that the laser attenuation is highly nonlinear with pulse intensity. We have observed over 90% attenuation for a 2 ps pulse at high intensity, ∼1017 W/cm2, compared to 32% at low intensity, ∼109 W/cm2. X-ray emission in the (0.1–8) keV range correlates with this nonlinear attenuation and is comparable to solid targets of similar atomic number.© 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1149219
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