Minimum B mirror with expander aimed for transmutation and energy production

A comparatively simple fusion driven fission device may be developed for industrial transmutation and energy production from spent nuclear waste [1-2]. This opportunity stems from the large fission to fusion power production ratio, $P_{fis}$/$P_{fus} \quad \approx $150, in a subcritical fusion device surrounded by a fission mantle with the neutron multiplicity $k_{eff }$=0.96. Power production is predicted if the electron temperature exceeds 700 eV. The expanders may improve the electron temperature by a formation of an ambipolar potential. Theoretical studies include RF heating, magnetic coil designs, fission mantle kinetics and some basic plasma investigations. A 20 m long mirror with a 40 cm plasma radius could be sufficient for a electric power production of 500 MW. [1] S. Taczanowski, ``Premises for development of fusion-fission hybrid systems'' in IAEA-RC-870.3, TWG-FR/132, Chennai, India 15 -- 19 January 2007. [2] O. {\AA}gren, V.E. Moiseenko, A. Hagnest{\aa}l, ``The straight field line mirror concept and applications'', Problems of atomic science and technology \textbf{6}. \textit{Series: }Plasma Physics, 8 (2008).