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A series of pulsed power driven recent Kr gas-puff experiments on the Sandia National Laboratories Z machine have produced intense X-rays in the multi-keV photon energy range. Krypton spectra from Z pinch implosions can be used to analyze the presence and dynamics of the emitting regions, which could dominate the Kr K- and L-shell yields. This theoretical investigation of highly charged high atomic...
Emission line ratios have been used as an effective diagnostic for the determination of the plasma parameters. However, the treatment of doubly excited states in such models can affect the ionization dynamics which can subsequently alter the emission line ratios and absolute powers used for plasma diagnostics. Prior models have also assumed that the electron energy distribution function (EEDF) is...
Summary form only given. Fast z-pinches produce intense K-shell radiation from wire arrays and for Cu arrays these photon energies can exceed 8 keV Experimental investigations of pinches on ZR using Cu arrays have already begun and more are planned for the near future. However to produce significant K-Shell emissions from moderately high atomic number plasmas such as Cu, they must be rapidly ionized...
We have developed a collisional-radiative spectroscopic model that combines the completeness of highly averaged Rydberg states models with the accuracy of detailed models for all important excited states. Our model includes an abundance of levels and atomic structure data as well as collisional and radiative processes including excitation, ionization, and recombination level couplings. This approach...
Summary form only given. Accurate determination of atomic data that have significant effects on line emission is crucial for reliable X-ray diagnostics of laboratory Z-pinch and astrophysical plasmas. An adequate description of the dynamics of ionization and X-ray production requires an extensive amount of atomic data that include important collisional and radiative processes such as collisional excitation...
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