Versitile X-ray diagnostics of laser-produced high-temperature plasmas using an ultra-high luminosity spectrometer

Abstract

Abstract Versitile diagnostics of high-temperature magnesium laser-produced plasmas is performed using an ultra-high luminosity X-ray focusing crystal spectrometer. The plasmas are produced by focusing nanosecond laser pulses (0.53 μm, 1 J, 2 ns) on a massive magnesium target. The absolute intensities and X-ray yields are measured for the resonance lines of H- and He-like ions (spectral range: Δλ = 8 –10 Å), the electron temperature of plasmas is determined (range: T e = 200 – 550 eV), and the behaviour of these parameters is established in a broad range of laser pulse energy E L (10 mJ – 1 J). This approach permits the parameters of laser-plasma radiation sources to be monitored in real time in a wide intensity range (difference in intensity: over 104) and in a broad range of plasma parameters.