High gain target design and optimization of implosion trajectory for stable implosion

提出了一种新的快速点火方案，即压缩后的DT主燃料由另一部分单独内爆的DT燃料撞击点燃，并在空心锥形靶内加速到10^8 cm/sec的超高速。它的动能在与主燃料碰撞时直接转化为对应温度bbb50 keV的热能，这部分自热起着点火剂的作用。初步的二维辐射-流体动力学模拟表明压缩堆芯有大量的加热，从而证明了新方案的可行性。高能量耦合效率，不需要PW激光器，以及在相当成熟的物理理解和实验技术下在实验室进行研究的可负担性-这些被认为是本方案的显着优点。

A new scheme for fast ignition is proposed, in which the compressed DT main fuel is ignited by impact collision of another fraction of separately imploded DT fuel, which is accelerated in the hollow conical target to hyper-velocities in the order of 10^8 cm/sec. Its kinetic energy is directly converted into thermal energy corresponding to temperatures > 5 keV on the collision with the main fuel, and this self-heated portion plays the role of igniter. A preliminary two-dimensional radiation-hydrodynamic simulation shows substantial heating of the compressed core and thus the feasibility of the new scheme. High energy coupling efficiency, no need for a PW laser, and affordability of investigation in laboratories under rather well established physical understanding and experimental know-how - those are considered to be the notable advantages of the present scheme.