The quotidian equation of state (QEOS) is a general-purpose equation of state model for use in hydrodynamic simulation of high-pressure phenomena. Electronic properties are obtained from a modified Thomas–Fermi statistical model, while ion thermal motion is described by a multiphase equation of state combining Debye, Grüneisen, Lindemann, and fluid-scaling laws. The theory gives smooth and usable predictions for ionization state, pressure, energy, entropy, and Helmholtz free energy. When necessary, the results may be modified by a temperature-dependent pressure multiplier which greatly extends the class of materials that can be treated with reasonable accuracy. In this paper a comprehensive evaluation of the resulting thermodynamic data is given including comparison with other theories and shock-wave data.
This paper gives a theoretical analysis of the heating of solids by ultra short-pulse lasers in the femtosecond time domain. Time and space profiles of the temperature are calculated and diagnostic techniques are proposed. It is found that one can produce hot plasmas of accurately known high density, making possible the measurement of material properties in an interesting new parameter range
There is a need for a convenient method to calculate oscillator strengths for highly charged ions for application to the calculation of stopping powers. In this paper we describe a new semiclassical method for finding electron matrix-elements and oscillator strengths. The method is tested by comparison with known results for the Coulomb potential and proves to be numerically robust and reasonably accurate for all transitions examined. It is applied to calculate the hydrogen Bethe excitation potential
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