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超快速键软化在:用X射线绘制固体的原子间潜力

D M Fritz¹, D A Reis, B Adams

¹Frontiers in Optical Coherent and Ultrafast Science (FOCUS) Center, Departments of Physics and Applied Physics Program, University of Michigan, Ann Arbor, MI 48109, USA. dmfritz@slac.stanford.edu

Science (New York, N.Y.)

|February 3, 2007

概括

强烈的激光脉冲揭示了在极端条件下,双珠石中的原子间力量如何变化. 这项研究绘制了激光诱导的固体-固体相位过渡期间的潜在能量表面.

科学领域:

凝聚物质物理学凝聚物质物理学
材料科学是一种材料科学.
超快的科学超快的科学

背景情况:

强烈的五秒激光激发产生了独特的,短暂的物质状态.
高激发密度显著改变固体中的原子间力.

研究的目的:

为了绘制比斯木的载体密度依赖的原子间潜力.
在接近固体-固体相位过渡的过程中研究石.

主要方法:

利用了带有高亮度线性电子加速器的X射线源的光技术.
采用了脉冲对脉冲计时的重建,以获得5秒分辨率.
实现了原子间潜在能量表面的定量表征.

主要成果:

实现了对斯木的原子间潜力的详细绘制.
这项研究重点研究了高激发密度下斯木的行为.
这项研究探讨了向固体-固体相变的过渡.

结论:

五秒激光激发提供了一种方法来研究不可接近的物质状态.
能够对原子间潜在能量表面进行定量表征.
可以精确地确定高度激发的固体的原子间潜力.

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