利用3个周期的800 nm强脉冲激光（10 fs）测量了Ar原子$_n$团簇（$n$ =400-900）在峰值强度为5 $\times$ 10 $^{14}$ W cm $^{-2}$的辐照下库仑爆炸后发射的离子的能量分布。3周期脉冲不提供集群足够的时间进行库仑驱动的膨胀，导致整体动力学，似乎是非常不同的那些在多脉冲制度。峰值离子能量远低于当使用相同强度的100 fs脉冲时获得的能量;它们几乎与簇的大小无关（在400-900个原子的范围内）。离子产率是一个大的20倍，在垂直于激光偏振矢量的方向比沿it. This意想不到的各向异性定性合理化使用分子动力学计算屏蔽的集群内的电子电荷云是空间不对称的。
英文摘要：
Intense 3-cycle pulses (10 fs) of 800 nm laser light are utilized to measure energy distributions of ions emitted following Coulomb explosion of Ar$_n$ clusters ($n$=400-900) upon their irradiation by peak intensitis of 5$\times$10$^{14}$ W cm$^{-2}$. The 3-cycle pulses do not afford the cluster sufficient time to undergo Coulomb-driven expansion, resulting in overall dynamics that appear to be very different to those in the many-pulse regime. The peak ion energies are much lower than those obtained when 100 fs pulses of the same intensity are used; they are almost independent of the size of the cluster (over the range 400-900 atoms). Ion yields are a factor of 20 larger in the direction that is perpendicular to the laser polarization vector than along it. This unexpected anisotropy is qualitatively rationalized using molecular dynamics calculations in terms of shielding by an electronic charge cloud within the cluster that is spatially asymmetric.
The role of charge and proton transfer in fragmentation of hydrogen-bonded nanosystems: the breakup of ammonia clusters upon single photon multi-ionization
University of Gothenburg（哥德堡大学）；Université Gustave Eiffel（古斯塔夫·埃菲尔大学）；MAX IV Laboratory, Lund University（隆德大学马克四实验室）；University of Southampton（南安普顿大学）；Oxford University（牛津大学）
Electron Impact Fragmentation Dynamics of Carbonyl Sulfide: A Combined Experimental and Theoretical Study
Indian Institute of Science Education and Research Kolkata（印度科学教育研究学院加尔各答分校）；University of Kassel（卡塞尔大学）；Ashoka University（阿肖卡大学）；IIT Tirupati（蒂鲁帕提印度理工学院）；IISER Tirupati（蒂鲁帕提印度科学教育与研究所）
