CAJ | 학술논문

采用飞秒激光与薄膜靶相互作用测量了前向超热电子的分布和能谱。结果显示，前向超热电子主要集中在靶背法线方向附近区域发射，而超热电子的能谱呈双温类麦克斯韦分布。根据所测超热电子能谱和分布推算出前向超热电子总产额约1.23×108shot-1和前向超热电子的总能量约4.65×1011keV.shot-1，最后给出激光能量转化为前向超热电子能量的转化效率约5.72×10-4，这些结果与文献[17]的较好地一致。
채용비초격광여박막파상호작용측량료전향초열전자적분포화능보。결과현시，전향초열전자주요집중재파배법선방향부근구역발사，이초열전자적능보정쌍온류맥극사위분포。근거소측초열전자능보화분포추산출전향초열전자총산액약1.23×108shot-1화전향초열전자적총능량약4.65×1011keV.shot-1，최후급출격광능량전화위전향초열전자능량적전화효솔약5.72×10-4，저사결과여문헌[17]적교호지일치。
The distribution and the energy spectrum of forward hot electrons produced by the interaction of fs-laser with foil target were measured. The results show that the forward hot electrons jet with a large angle width is mainly along the direction of rear normal of target; the energy spectrum of forward hot electrons is a Maxwellian-like distribution. The yield and energy of forward hot electrons is about 1.23×108shot-1 and 4.65×1011keV.shot-1, which were deduced from the distribution and the energy spectrum of forward hot electrons. The conversion efficiency of laser energy to forward hot electrons energy is about 5.72×10-4, which is better consistent with that from the reference [17].