%e have made numerical calculations with a new nonlocal fluid treatment of Coulomb collisional electron transport which self-consistently accounts for the nonthermal high-energy electrons arising from the spatial transport of thermal electrons whose range is not short compared with the temperature scale length. Heat fluxes associated with steep gradients are reduced from classical, while ahead of a temperature front there is preheating which exceeds classical.

Excitation energies for 3l-4lЈ particle-hole states of Ni-like ions are determined to second order in relativistic many body perturbation theory. The calculations start from a closed-shell Dirac-Fock potential, and include second-order Coulomb and Breit-Coulomb interactions. Retarded electric-dipole matrix elements ͑in length and velocity forms͒ are calculated in second order for transitions from excited 3l-4lЈ states to the closed-shell ground state. Wavelengths for 3-4 and 4-4 transitions are compared with experimental data, and with other high-precision calculations. Trends of oscillator strengths as functions of nuclear charge Z are shown graphically for selected transitions.

A reduced Fokker-Planck theory of Coulomb collisional electrons In hlgh-Z laserfusion plasmas is found to give self-consistent results of lower ttian classical absorption and heat transport in numerical calculations characterized by laboratory parameters. These results are determined by non-Maxwell-Boltzmann distributions which are established when laser absorption is balanced by heat transport.

Energies of 3l3lЈ3lЉ states of aluminumlike ions with Zϭ14-100 are evaluated to second order in relativistic many-body perturbation theory starting from a 1s 2 2s 2 2p 6 Dirac-Fock potential. Intrinsic three-particle contributions to the energy are included in the present calculation and found to contribute about 10-20 % of the total second-order energy. Corrections for the frequency-dependent Breit interaction and the Lamb shift are included in lowest order. A detailed discussion of contributions to the energy levels is given for aluminumlike germanium (Zϭ32). Comparisons are made with available experimental data. We obtain excellent agreement for term splitting, even for low-Z ions. These calculations are presented as a theoretical benchmark for comparison with experiment and theory.

Excitation energies, oscillator strengths, and transition rates are calculated for (5d 2 + 5d6s + 6s 2 )-(5d6p + 5d5f + 6s6p) electric dipole transitions in Yb-like ions with nuclear charges Z ranging from 72 to 100. Relativistic many-body perturbation theory (RMBPT), including the retarded Breit interaction, is used to evaluate retarded E1 matrix elements in length and velocity forms. The calculations start from a [Xe]4f 14 core Dirac-Fock potential. First-order RMBPT is used to obtain intermediate coupling coefficients, and second-order RMBPT is used to determine matrix elements. A detailed discussion of the various contributions to energy levels and dipole matrix elements is given for ytterbium like rhenium, Z=75. The resulting transition energies are compared with experimental values and with results from other recent calculations. Trends of excitation energies, line strengths, oscillator strengths, and transition rates as functions of nuclear charge Z are shown graphically for selected states and transitions. These calculations are presented as a theoretical benchmark for comparison with experiment and theory.