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HiPIMS沉积方法在超短周期的多层镜中解锁了更高的X射线反射率

Corentin Nannini, Nolann Ravinet, Evgueni Meltchakov

|November 4, 2025

概括

高功率冲动磁铁喷射 (HiPIMS) 通过减少接口粗度,显著提高了多层镜子的质量. 这一突破提高了X射线镜的效率,用于先进的科学应用.

科学领域:

材料科学材料科学材料科学
光学是什么?光学是什么?光学是什么?
在X射线物理中,X射线物理

背景情况:

具有超短周期的多层 (ML) 镜对X射线科学至关重要.
在亚纳米尺度的接口缺陷限制了这些镜子的效率.
标准磁铁子喷射在为此类应用实现高质量的接口方面面临挑战.

研究的目的:

调查优化高功率冲动磁铁子喷射 (HiPIMS) 对超短周期W/SiCML的接口质量的影响.
为了比较HiPIMS与ML镜子制造的标准磁铁子喷射的性能.
评估由此产生的反射率和带宽的改进.

主要方法:

使用优化的HiPIMS和标准磁铁子喷射制造W/SiCML.
在多个光子能量下以同步基的X射线反射计.
分散散射测量以描述界面特性.

主要成果:

在W/SiCML中,HiPIMS将界面粗度降低了两倍 (从~0.4nm到~0.2nm).
峰值反射率在40 keV时显著增加,从63%增加到79%.
使用HiPIMS制造的镜子观察到更广泛的带宽.

结论:

优化的HiPIMS在实现超短周期ML的高质量接口方面取得了突破.
这一进步克服了接口缺陷所带来的局限性,使得X射线光学中的性能提高.
HiPIMS技术在软X射线和硬X射线范围内都有很大的应用潜力.

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