飞秒激光脉冲辐照乙醇液滴发射出的高能电子。
Energetic electrons emitted from ethanol droplets irradiated by femtosecond laser pulses.
作者信息
Peng X Y, Zhang J, Jin Z, Liang T J, Sheng Z M, Li Y T, Yu Q Z, Zheng Z Y, Wang Z H, Chen Z L, Zhong J Y, Tang X W, Yang J, Sun C J
机构信息
Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China.
出版信息
Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Feb;69(2 Pt 2):026414. doi: 10.1103/PhysRevE.69.026414. Epub 2004 Feb 27.
We investigate the angular distribution and the energy spectrum of hot electrons emitted from ethanol droplets irradiated by linearly polarized 150-fs laser pulses at an intensity of 10(16) W/cm(2). Two hot electron jets symmetrically with respect to the laser propagation direction are observed within the polarization plane. This is due to the spherical geometry of droplets in the intense laser field. The maximum energy of the hot electrons is found to be more than 600 keV. Particle-in-cell simulations suggest that the resonance absorption is the main mechanism for hot electron generation.
我们研究了在强度为10¹⁶ W/cm²的150飞秒线偏振激光脉冲辐照下乙醇液滴发射的热电子的角分布和能谱。在偏振平面内观察到相对于激光传播方向对称的两个热电子射流。这是由于液滴在强激光场中的球形几何形状所致。发现热电子的最大能量超过600 keV。粒子模拟表明共振吸收是热电子产生的主要机制。
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