Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Phys Rev Lett. 2011 Sep 9;107(11):115002. doi: 10.1103/PhysRevLett.107.115002. Epub 2011 Sep 8.
Experimental data from the Trident Laser facility is presented showing quasimonoenergetic carbon ions from nm-scaled foil targets with an energy spread of as low as ±15% at 35 MeV. These results and high-resolution kinetic simulations show laser acceleration of quasimonoenergetic ion beams by the generation of ion solitons with circularly polarized laser pulses (500 fs, λ=1054 nm). The conversion efficiency into monoenergetic ions is increased by an order of magnitude compared with previous experimental results, representing an important step towards applications such as ion fast ignition.
来自三叉戟激光装置的实验数据显示，在 35 MeV 时，nm 级薄靶产生的碳离子能接近单能，能量分散度低至±15%。这些结果和高分辨率动力学模拟表明，通过使用圆偏振激光脉冲（500fs，λ=1054nm）产生离子孤子，可以实现准单能离子的激光加速。与以前的实验结果相比，单能离子的转换效率提高了一个数量级，这是朝着离子快速点火等应用迈出的重要一步。
