Theoretical and experimental studies of the radiative properties of plasma and their applications to temperature diagnostics of Z-pinch plasma

31st International Conference on Equations of State for Matter

Orlov, N.Yu.^1 ; Denisov, O.B.^1 ; Vergunova, G.A.^2 ; Rosmej, O.N.^3

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13 Bldg 2, Moscow

125412, Russia^1

Lebedev Physical Institute, Russian Academy of Sciences, Leninsky Avenue 53, Moscow

119991, Russia^2

GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, Darmstadt

64291, Germany^3

关键词: High energy densities;    Quantum-mechanical calculation;    Radiative efficiency;    Radiative properties;    Temperature diagnostics;    Theoretical approach;    Theoretical estimation;    Theoretical modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012111/pdf
DOI  :  10.1088/1742-6596/774/1/012111

来源: IOP

【 摘 要 】

Important features of the theoretical model known as the ion model of plasma, which is used for quantum mechanical calculations of radiative opacity, are discussed. Reliability of ion-model results was tested with experiment, where measurements of X-pinch radiation energy yield for two exploding wire materials, NiCr and Alloy 188 were made. Theoretical estimations of radiative efficiency were compared with experimental results, and ion-model calculations agree well with the experimental data. Subsequently, the theoretical approach has been applied for theoretical and experimental studies of radiative and gas dynamic properties of plasma at high energy density. As it was found, the theoretical approach can be used for temperature diagnostics of Z-pinch plasma. Calculations of the spectral brightness were made for W plasma radiation at the temperatures 1 and 1.2 keV and the densities 1 and 2 g/cc.