研究目的
To perform versitile diagnostics of high-temperature magnesium laser-produced plasmas using an ultra-high luminosity X-ray focusing crystal spectrometer, measuring absolute intensities and X-ray yields for the resonance lines of H- and He-like ions, determining the electron temperature of plasmas, and establishing the behaviour of these parameters in a broad range of laser pulse energy.
研究成果
The work demonstrated the possibility to perform complex diagnostics of high-temperature laser-produced plasmas using a compact ultra-high luminosity X-ray focusing crystal spectrometer. The absolute intensities and X-ray yield of the resonance lines of [H]- and [He]-like ions were measured, the electron temperature of the plasmas and the dependences of these quantities were determined under the variation of laser pulse energy in a broad range. These data are required for the development of new techniques for plasma diagnostics and calibration of spectroscopic devices.
研究不足
The method is applicable to plasmas with a relatively low electron density (Ne << 1023 cm–3), when coronal equilibrium is realised. The diagnostics of magnesium plasmas from the spectra of [H]- and [He]-like ions is hindered because of transient processes when Te >> I/(8 – 10).
