Shell explosion and core expansion of xenon clusters irradiated with intense femtosecond soft x-ray pulses
Shell explosion and core expansion of xenon clusters irradiated with intense femtosecond soft x-ray pulses
复制标题
强飞秒软 X 射线脉冲辐照下氙簇的壳层爆炸和核心膨胀
DOI：
10.1088/0953-4075/42/13/134018
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
T. Möller
中科院分区：
文献类型：
--
作者：
H. Thomas;C. Bostedt;M. Hoener;E. Eremina;H. Wabnitz;T. Laarmann;E. Plönjes;R. Treusch;A. R. B. D. Castro;T. Möller
研究了来自 FLASH 自由电子激光器的强飞秒软 X 射线脉冲中氙簇的崩解机制。团簇的照射波长为 λ = 13.7 nm (hν = 90.5 eV)，功率密度为 5 × 1014 W cm−2。在 10 fs 脉冲期间，Xe 团簇转变为高度激发的多电荷纳米等离子体。在静电模型中模拟离子动能表明，高电荷离子由于库仑斥力而从表面爆炸，而内核则在流体动力膨胀中膨胀。目前的结果提供了除了直接多步光电发射之外团簇的有效电离的证据。
The disintegration mechanisms for xenon clusters in intense femtosecond soft x-ray pulses from the FLASH free electron laser are investigated. The clusters are irradiated at a wavelength of λ = 13.7 nm (hν = 90.5 eV) and power densities of 5 × 1014 W cm−2. During the 10 fs pulse the Xe clusters are transformed into a highly excited, multiply charged nanoplasma. Simulating the ion kinetic energies in an electrostatic model suggests that highly charged ions explode off the surface due to Coulomb repulsion while the inner core expands in a hydrodynamic expansion. The current results yield evidence for efficient ionization of the clusters in addition to direct multistep photoemission.
影响因子：
8.6
作者：
Bostedt, C.;Thomas, H.;Moeller, T.
通讯作者：
Moeller, T.
影响因子：
35
作者：
Ackermann, W.;Asova, G.;Zapfe, K.
通讯作者：
Zapfe, K.