Cluster nanoplasmas in strong FLASH pulses: formation, excitation and relaxation
Cluster nanoplasmas in strong FLASH pulses: formation, excitation and relaxation
复制标题
强 FLASH 脉冲中的纳米等离子体簇：形成、激发和弛豫
DOI：
10.1088/0953-4075/43/19/194012
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
U. Saalmann
中科院分区：
文献类型：
--
作者：
U. Saalmann
暴露在强激光辐射下的团簇迅速变成纳米等离子体：被带电的团簇离子限制在纳米尺度上的短寿命电子等离子体。虽然星团最终会爆炸，但脉冲期间的瞬态多电子动力学非常有趣，而且在很大程度上尚未被探索。它决定了能量吸收的机制，因此可能有助于理解测量的电子和离子光谱，也可以在其他样品中，如大分子中。此外，由于样品的有限大小，短脉冲实验装置和可观测物成为可能，为研究等离子体的非平衡动力学提供了新的可能性。本文讨论了由自由电子激光器（FELs）的强脉冲驱动的稀有气团中纳米等离子体的形成、激发和弛豫，这些脉冲的光子频率在10到100 eV之间，目前在FLASH上可用。这台机器独特地结合了明亮、可调谐和短脉冲的辐射，以及即将到来的x射线FELs，使此类研究成为可能。
Clusters exposed to intense laser radiation quickly turn into nanoplasmas: short-lived electron plasmas confined by the charged cluster ions on a nanometre scale. Although the cluster will eventually explode, the transient multi-electron dynamics during the pulse is of great interest and largely unexplored. It determines the mechanism of energy absorption and thus may help to understand measured electron and ion spectra, also in other samples, such as large molecules. Furthermore, an experimental setup with short pulses and access to observables, which becomes possible because of the sample's finite size, offers novel possibilities of investigating the non-equilibrium dynamics of plasmas. Here, the formation, excitation and relaxation of nanoplasmas in rare-gas clusters driven by strong pulses from free-electron lasers (FELs) with photon frequencies in the range of about 10 to 100 eV as currently available at FLASH are discussed. It is the unique combination of brilliant, tunable and short-pulse radiation in this machine and upcoming x-ray FELs which makes such studies feasible.
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.