Diagnostics of laser-induced plasma with soft X-ray (13.9 nm) bi-mirror interference microscopy
Diagnostics of laser-induced plasma with soft X-ray (13.9 nm) bi-mirror interference microscopy
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使用软 X 射线 (13.9 nm) 双镜干涉显微镜诊断激光诱导等离子体
DOI：
10.1007/s00340-004-1439-0
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
H. Daido
中科院分区：
文献类型：
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作者：
H. Tang;O. Guilbaud;G. Jamelot;D. Ros;A. Klisnick;D. Joyeux;D. Phalippou;M. Kado;M. Nishikino;M. Kishimoto;K. Sukegawa;M. Ishino;K. Nagashima;H. Daido
提出了纳秒脉冲泵浦 Al (Z=13) 等离子体的 X 射线干涉显微镜诊断。使用瞬态皮秒类镍银 X 射线激光器（13.9 nm）作为探测光束，并采用波前分割双镜干涉仪作为诊断工具。根据条纹位移，可以推导出加热脉冲峰值后 1 ns 处的二维等离子体密度分布。观察到等离子体发展过程中相反的条纹移动，并讨论了这种行为的可能解释。这项研究将有助于一维和二维流体动力学代码的验证，以及更好地理解激光产生等离子体的开发过程中的物理原理。
X-ray interference microscopy diagnostics of a nanosecond-pulse pumped Al (Z=13) plasma are presented. A transient picosecond Ni-like Ag X-ray laser (13.9 nm) is used as the probe beam and a wavefront division bi-mirror interferometer is adopted as the diagnosis tool. From the fringe shifts, the two-dimensional plasma density profile at 1 ns after the peak of the heating pulse is deduced. Opposite fringe shifts during the plasma development are observed and possible explanations for this behavior are discussed. This study will contribute to the validation of 1D and 2D hydrodynamic codes as well as to the better understanding of the physics during the development of laser produced plasmas.