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首页> 外文会议>Conference on Superintense Light Fields and Ultrafast Processes; 20030630-20030704; St.Petersburg; RU >Correlation between copper photoemission spectra and spectra of X-ray pulses produced by sub-picosecond laser irradiated noble gas clusters
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Correlation between copper photoemission spectra and spectra of X-ray pulses produced by sub-picosecond laser irradiated noble gas clusters

机译：亚皮秒激光辐照稀有气体团簇产生的铜光发射光谱与X射线脉冲光谱之间的相关性

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摘要

Interaction of a cluster jet with a very intense laser pulse generates x-rays in the keV domain. Many features of this type of source are well characterized and understood but their temporal structure is still being discussed. We performed experiments on photoelectron emission of a pure copper metallic sample irradiated by such a source of x-rays. We determined the best laser and gas jet parameters in order to enhance the photoemission yield. The maximum signal was obtained with 30 bars of xenon irradiated by 250 fs 75 mJ pulse at 800 nm, corresponding to an intensity of 2.10~(16) W/cm~2. We were able to observe a peak of Auger electrons at 62 eV in the photoelectron spectrum. This suggests that pulse duration measurements based on the Laser Assisted Auger Decay (LAAD) technique are possible.
机译：团簇射流与非常强的激光脉冲的相互作用会在keV域中产生X射线。这类源的许多特征已得到很好的表征和理解，但是它们的时间结构仍在讨论中。我们对由这种X射线源照射的纯铜金属样品的光电子发射进行了实验。我们确定了最佳的激光和气体喷射参数，以提高光发射率。在300 nm的250 fs 75 mJ脉冲下，用30 bar的氙气照射得到最大信号，强度为2.10〜（16）W / cm〜2。我们能够在光电子光谱中观察到俄歇电子在62 eV处出现一个峰值。这表明基于激光辅助俄歇衰变（LAAD）技术的脉冲持续时间测量是可能的。

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