中能级下(e,2e)三重微分散射截面的计算

入射能量为150eV时，电子入射离化氢原子，出射的2个电子共面但速度不同，引入一个实参数将总的动能算符分成两部分：结构因子和相关因子，讨论相关因子和入射角对recoil峰的影响。     

Energetic-ion generation by the combination of laser pressure and Coulomb explosion

A scheme of generating energetic ions by the interaction of an ultrahigh-intensity laser pulse and a thin solid foil is studied. The combination of the effects of radiation pressure and Coulomb explosion makes the ion acceleration more effective. The maximum ion velocity variation with time is predicted theoretically while the temporal evolution of the electrostatic field due to the Coulomb explosion is taken into consideration. Two-dimensional particle-in-cell simulations are done to verify the theory.     

钙钛矿CsPbX_3量子点材料制备进展

全无机钙钛矿CsPbX_3量子点因具备光致发光量子效率高、禁带宽度可调、激发带宽窄等优异的光学特性,在照明、显示领域备受关注。介绍了该体系材料的主要制备方法,如热注入法、过饱和再结晶法、微波辅助法、一步旋涂法、阴离子交换法和化学气相沉积法等,总结了在光学性能调控、有毒元素Pb替换或掺杂方面的研究进展,探讨了面临的问题及未来发展方向。     

Proton Acceleration with Nano-Scale Micro-Structured Target by Circularly Polarized Laser Pulse

Two dimensional particle-in-cell simulations are taken to study the interaction of a circularly polarized laser pulse with a nano-scale micro-structured target. The protons which are doped in the rear side of the target experience the electrostatic fields caused by both the radiation pressure driven shock and the target normal sheath at the rear side of the target. A quasimonoenergetic proton bunch with central energy of about 11MeV and energy spread of ＆#8710; ε/ε about 0.18 is achieved by using a 3.45×1019 W/cm2, 66fs laser pulse. A comparison with the case of linearly polarized laser pulse and the same target condition is considered.