Effects of ambient pressure on Cu Kα X-ray radiation with millijoule and high-repetition-rate femtosecond laser

Effects of ambient pressure on Cu Kα X-ray radiation with millijoule and high-repetition-rate femtosecond laser
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环境压力对毫焦高重频飞秒激光 Cu Kα X 射线辐射的影响

DOI:
10.1007/s00340-010-3902-4
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发表时间:
2010
期刊:
Applied Physics B
影响因子:
--
通讯作者:
Jiro Matsuo
Jiro Matsuo
中科院分区:
--
文献类型:
--
作者:
Masaki Hada;Jiro Matsuo

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硬 Cu KαX 射线辐射是在空气、氦气或真空 (2.7–1.3×104Pa) 环境中用毫焦耳和高重复率 Ti: 蓝宝石激光器产生的。通过将 0.06–1.46 mJ/脉冲、100 fs、1 kHz 重复飞秒激光聚焦到固体铜靶上,形成直径为 4.8 μm 的光斑,获得特征 X 射线。通过简单的电子碰撞模型解释了KαX射线转换效率与大气条件之间的关系,该模型表明电子平均自由程是在任何环境条件下产生超快脉冲X射线的重要参数。我们还展示了在大气压下在氦气中工作的高强度 X 射线源。
Hard Cu KαX-ray radiation was generated with a millijoule and high-repetition-rate Ti: sapphire laser in air, helium or vacuum (2.7–1.3×104Pa) ambient. The characteristic X-ray was obtained by focusing the 0.06–1.46 mJ/pulse, 100 fs, 1 kHz repetition femtosecond laser onto a solid copper target to a spot 4.8 μm in diameter. The relationship between KαX-ray conversion efficiency and atmospheric conditions was explained with a simple electron collision model that suggested that the electron mean free path is an important parameter in the generation of ultrafast pulsed X-rays in any ambient condition. We also demonstrated a high-intensity X-ray source working in helium at atmospheric pressure.
使用飞秒激光脉冲诱导的激光等离子体发射的硬 X 射线进行元素分析
DOI: --
发表时间: 2001
期刊: Review of Scientific Instruments 72
影响因子: --
作者:
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CdTe 晶体中相干光学声子的飞秒时间分辨 X 射线衍射
DOI: --
发表时间: 2008
期刊: Appl. Phys. Lett 93
影响因子: --
作者:
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发表时间: 2000-07-01
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影响因子: 2.4
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