光学学报, 2018, 38 (7): 0702003, 网络出版: 2018-09-05
低于阈值激光功率密度下Mg原子的非序列双电离 
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Nonsequential Double Ionization of Mg Atoms Below Threshold Laser Power Density
图 & 表
图 1. 激光功率密度1.0×1013 W·cm-2下(a)末态关联电子对沿x方向的CMD和(b) Mg2+的动量分布;激光功率密度3×1013 W·cm-2下末态关联电子对沿(c) x和(d) y方向的CMD
Fig. 1. (a) CMD of correlated electron pairs at final state and (b) momentum distribution of Mg2+ when laser power density is 1×1013 W·cm-2; CMDs along (c) x and (d) y directions of correlated electron pairs at final state when laser power density is 3×1013 W·cm-2
图 2. (a) NSDI轨道数量随延迟时间的分布;(b) Δt<0.5T和(c) Δt>0.5T时,两电子沿x方向的CMD
Fig. 2. (a) NSDI trajectory counts versus delay time; CMDs of two electrons along x direction for(b) Δt<0.5T and (c) Δt>0.5T
图 3. (a) Δt<0.5T和(b) Δt>0.5T时,重碰撞事件(绿色区域)和双电离事件(红色区域)随延迟时间的分布
Fig. 3. Recollision events (green region) and double ionization events (red region) versus delay time when (a) Δt<0.5T and (b) Δt>0.5T
图 4. (a) 1.14T,(b) 1.34T,(c) 1.16T,(d) 1.66T下的关联电子能量图
Fig. 4. Correlated-electron energy distributions under (a) 1.14T, (b) 1.34T, (c) 1.16T and (d) 1.66T
图 5. 电子的(a)(c)能量和(b)(d)动量轨道
Fig. 5. (a)(c) Energy and (b)(d) momentum trajectories of electrons
图 6. (a)激光功率密度为1×1013 W·cm-2时,NSDI中Δt<0.5T 对应的沿x方向的CMD;(b)重碰撞事件(绿色区域)和双电离事件(红色区域)随时间的分布;激光功率密度为2×1013 W·cm-2时,NSDI中(c) Δt<0.5T和(d) Δt>0.5T对应的沿x方向的CMD
Fig. 6. (a) CMD along x direction in NSDI for Δt<0.5T when laser power density is 1×1013 W·cm-2; (b) recollision events (green region) and double ionization events (red region) versus time; CMDs along x direction in NSDI for (c) Δt<0.5T and (d) Δt>0.5T when laser power density is 2×1013 W·cm-2
冯凤珍, 白丽华, 郑晓晓. 低于阈值激光功率密度下Mg原子的非序列双电离[J]. 光学学报, 2018, 38(7): 0702003. Fengzhen Feng, Lihua Bai, Xiaoxiao Zheng. Nonsequential Double Ionization of Mg Atoms Below Threshold Laser Power Density[J]. Acta Optica Sinica, 2018, 38(7): 0702003.
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