Stimulated Raman scattering from interaction of 2 ns, 351 nm laser with hohlraum

An experiment of laser-plasma interaction in hohlraum plasmas produced by laser beams with 351 nm wavelength, 2 ns pulse duration at SGII laser facility was reported in this paper. The time-resolved spectra and energy of scattered light by stimulated Raman scattering (SRS) were measured. When 2 ns laser entered into a small hohlraum(700 mm×1 250 mm), the energy of scattered light from a slot hohlraum was 1.3 times that from a hohlraum. With different hohlraum size, the energy of scattered light from a small hohlraum was 1.6 times higher than that from a standard hohlraum(800 mm×1 350 mm). Compared with 1 ns laser, when 2 ns laser interacted with hohlraum, the energy of SRS light was lower because of the decline of laser power, while the duration time was longer. The exper