Application of snow nanograin targets for the generation of fast ions in femtosecond laser plasma
- Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)
- Russian Academy of Sciences, Prokhorov Institute of General Physics (Russian Federation)
- Hebrew University, Racah Institute of Physics (Israel)
- Soreq Research Center (Israel)
We have measured the energy of the directed motion of multiply charged ions produced when solid targets are exposed to low-contrast (10{sup -3}-10{sup -2}) femtosecond laser pulses with intensities 10{sup 15}-10{sup 16} W cm{sup -2}. The measurements are based on the recording of spatially resolved X-ray spectra for H-and He-like oxygen ions in the target plane. Analysis of the He{sub {beta}} and Ly{sub {alpha}} line profiles has revealed fractions of accelerated ions in plasma with energies from several to several tens of kiloelectronvolts. We show that using a layer of frozen nanometer-size water droplets as the targets leads to an effective absorption of laser pulses and a twofold rise in the energy (to 0.1 MeV) of He-like oxygen ions compared to the use of solid targets.
- OSTI ID:
- 21241945
- Journal Information:
- Journal of Experimental and Theoretical Physics, Vol. 107, Issue 3; Other Information: DOI: 10.1134/S106377610809001X; Copyright (c) 2008 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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