324 / 2019-02-26 03:20:16

Reducing problem of very high temperatures to ignite fusion by using non-thermal pressures of extreme CPA-laser pulses

Laser boron fusion, CPA extreme pulse, Kilotesla trapping, Avalanche reaction

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Reducing problem of very high temperatures to ignite fusion by using non-thermal pressures of extreme CPA-laser pulses
Heinrich Hora and Team
University of NewSouth Wales, Sydney, Australia
*Email: h.hora@unsw.edu.au
The key problem for controlled generation of fusion energy in a reactor for generating electricity is the temperature of dozens of million degrees Kelvin for thermal pressures. The sixty years of most sophisticated and expensive research has well achieved the generation of these temperatures under conditions in laboratories - both for ITER-like magnetic confinement as well as for NIF-like ICF when using nanosecond laser pulses - but without arriving at reactor conditions. Against the enormous thermal pressures it is known that non-thermal pressures by extremely powerful picosecond laser pulses can dominate based on plasma block ignition by the nonlinear force. Numerical predictions of 1978 were confirmed by measurements of Sauerbrey 1996, after CPA laser pulses were available. The very inefficient classical fusion of hydrogen H with 11B (HB11 reaction) in contrast did arrive at measurements with very highly increased gains. After these measurements could be explained including the avalanche HB11 reaction, other examples of fusion reactions support an alternative way for a fusion reactor without the usual difficulty of the thermal pressures.