Temperature Diagnostics of a Z-Pinch Plasma Using Calculations of the Spectral Brightness of X-Ray Radiation in a Large Interval of Radiation Energies

• Published in: Journal of Russian laser research 2016, Vol.37 (1), p.91-96
• Main Authors: Orlov, N. Yu, Denisov, O. B., Vergunova, G. A.
• Format: Article
• Language: English
• Subjects: Brightness; Diagnostic systems; Intervals; Lasers; Mathematical models; Microwaves; Optical Devices; Optics; Photonics; Photons; Physics; Physics and Astronomy; Plasma density; RF and Optical Engineering; Spectra; X rays
• ISSN: 1071-2836; 1573-8760
• DOI: 10.1007/s10946-016-9548-x

We elaborate a modern approach to the temperature diagnostics of a Z-pinch plasma. The approach is based on quantum-mechanical calculations of spectral brightness for X-ray radiation performed in a large interval of the photon energy for several temperatures and densities. In a large interval of the photon energy, a range can be found where the spectral brightness is highly sensitive to the temperature variation. This fact enables temperature diagnostics without complicated analysis of the spectral-line shape used in traditional diagnostic methods. In our calculations of the spectral brightness of X-ray radiation, we use a theoretical model known as the ion model of a plasma. We discuss important features of this model along with the other theoretical models used for calculating the radiative properties of the plasma. We calculate the spectral brightness of X-ray radiation for molybdenum plasma at temperatures of 1 and 1.2 keV and plasma densities of 1 and 2 g/cm 3 and find the range of X-ray radiation energies that can be used for the temperature diagnostics.