Time resolved corpuscular diagnostics of plasmas produced with high-intensity femtosecond laser pulses
Time resolved corpuscular diagnostics of plasmas produced with high-intensity femtosecond laser pulses
复制标题
高强度飞秒激光脉冲产生的等离子体的时间分辨微粒诊断
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
P. Nickles
中科院分区：
文献类型：
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作者：
S. Ter;M. Schnürer;P. Nickles
研究了强（约1019 W cm-2）飞秒激光脉冲驱动下水微滴靶的离子加速动力学。一个门控汤姆逊抛物线光谱仪的时间分辨率为几百皮秒允许一个测量不同的电荷状态和能量的离子加速过程的时间发展。结果发现，在测量的分辨率内，所有离子种类在相同的建立电场中同时加速。在非常短的时间段期间的离子加速导致非常宽的瞬时能量（速度）扩展。测量的时间分辨离子谱与计算值吻合良好。结果表明，飞秒强激光脉冲对离子的加速可以用一个模型来描述，即所有离子同时开始加速。时间分辨的离子光谱，测量的基础上，详细的诊断，显示出巨大的潜力的研究飞秒激光脉冲驱动等离子体中的离子加速过程。
Ion acceleration dynamics from a water microdroplet target driven by intense (about 1019 W cm−2) femtosecond laser pulses has been investigated. A gated Thomson-parabola spectrometer with a temporal resolution of a few hundreds of picoseconds allows one to measure the temporal development of the ion acceleration process for different charge states and energies. It was found, within the resolution of the measurement, that all ion species are accelerated simultaneously in the same built-up electric field. The ion acceleration during a very short time period results in a very broad instantaneous energy (velocity) spread. The measured time-resolved ion spectra are in good agreement with calculated ones. It shows that the ion acceleration created by a highly intense femtosecond laser pulse can be described in the frame of a model, where the acceleration starts simultaneously for all ions. The temporally resolved ion spectra, measured on the basis of the elaborated diagnostics, show great potential for studies of ion acceleration processes in femtosecond laser pulse driven plasmas.