Interaction of 0.53 μm laser pulse with millimeter-scale plasmas generated with gas-bag target
1 CAS Key Laboratory of Basic Plasma Physics and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, PR China
2 Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, PR China
a e-mail: email@example.com
Published online: 15 November 2013
Reported are the interactions of 0.53 μm laser pulse with millimeter-scale plasmas that are produced with gas-bag target irradiated with 0.35 μm laser pulses. The generated plasmas are characterized with collective Thomson scattering and space- and time-resolved X-ray images. The density of the plasmas is about 0.1 nc corresponding to the 0.53 μm laser beam, and the temperature is about 0.64 keV with a filling gas of C5H12. The interaction laser beam can output 1.0 kJ energy within the duration of 1 ns at the wavelength of 0.53 μm, leading to a nominal intensity less than 1.5 × 1015 W/cm2. The reflectivity of stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) is measured with a full aperture backscatter system. The experimental results show than the reflectivity of SBS is less than 5% and that of SRS is less than 1%. It is a positive result with respect to using 0.53 μm lasers as drivers for laser fusion.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.