Abstract
Absorption by Coulomb collisions has been studied comparing the classical low frequency limit, the QED result and the anomalous resistivity case. A derivation of the two-fluid plasma equations for HF monochromatic waves arrived at an additional effective collision frequency, and a new interpretation of D against E. Collisionless (dynamic) absorption by nonlinear forces was studied to derive the decay and broadening of a wave packet when moving through a homogeneous collisionless plasma. The fast time dependence of nonlinear forces was studied and the reflexion of wave packets evaluated. — Numerical studies of one dimensional two fluid plasmas with nonlinear forces and nonlinear optical constants describe the very fast evolution of space charges, electrostatic oscillations and double layers by nonlinear force interaction apart from a very detailed dynamics at plasma interaction with picosecond laser pulses. — Fusion gain calculations were extended with special attention to bremsstrahlung and strong coupling (Kalman-Golden-model). Aspects of fusion-fission hybrid breeder reactor were studied for various conditions of inertial confinement fusion. Fusion gains were calculated for volume ignition with different reheat models and the emitted alpha spectra were analysed. The phenomenological inclusion of space charge effects for α-upshifts was used for comparison with given experiments. Including the spin-polarized increase of fusion cross sections by 50%, conditions are found for optimized DT pellets of compression to 1000 times solid state density at input energy Eo near 1 MJ which arrive at some gains for ten times smaller Eo than in the unpolarized case.
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Dedicated to Nobel Laureate N.G. Basov on his 60th Birthday, 14.12.1982.
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Cicchitelli, L. et al. (1984). Absorption, Double Layers, and Dynamics at Laser-Plasma Interaction and Pellet Fusion Gains With Reheat. In: Hora, H., Miley, G.H. (eds) Laser Interaction and Related Plasma Phenomena. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7332-6_29
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DOI: https://doi.org/10.1007/978-1-4615-7332-6_29
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