Nuclear energy without radioactivity: Laser driven block ignition of hydrogen-lithium7

Side-on block ignition of uncompressed solid fusion fuel by multi-petawatt-picosecond laser pulses following the Chu-Bobin scheme may be possible using a drastic anomaly of laser-plasma interaction. It is essential that the laser pulses are extremely clean (contrast ratio 10$^{8})$ to avoid relativistic self-focusing$^{1}$ as shown for DT with next available laser pulses after updating the Chu-Bobin scheme.$^{2}$ Using p$^{11}$B (HB11) turned out to be only about ten times more difficult for laser fusion by this side-on ignition in contrast to impossible ignition by the usual spherical laser compression. Results for p-7Li fusion are similar to HB11. Controlled laser fusion energy may be produced with less radioactivity per energy than burning coal. \\[4pt] $^{1}$H. Hora, J. Badziak et al. Phys. Plasmas, \textbf{14}, 072701 (2007);\\[0pt] $^{2}$H. Hora, B. Malekynia et al. Appl. Phys. Lett. \textbf{93}, 011101 (2008);\\[0pt] $^{3}$H. Hora, G.H. Miley et al. Laser {\&} Part. Beams \textbf{27}, (2009) doi:10.1017/8S026303460999022X.