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扫描电子显微镜的校准标准的测量和不确定性
J Fu1, M C Croarkin1, T V Vorburger1
1National Institute of Standards and Technology, Gaithersburg, MD 20899-0001.
概括
标准参考材料484 (SRM-484) 对于校准扫描电子显微镜 (SEM) 放大效果至关重要. 本出版物详细介绍了SRM-484的方法和不确定性,使用其后续版本的数据.
科学领域:
- 材料科学 材料科学 材料科学
- 计量学 计量学 计量学
- 仪器科学 仪器科学
背景情况:
- 自1977年以来,标准参考材料484 (SRM-484) 已成为扫描电子显微镜 (SEM) 校准的一个关键工件.
- 1977年至1992年间,SRM-484的七个代 (从SRM-484到SRM-484f) 获得了认证.
- 准确的SEM放大校准对于可靠的纳米尺度测量至关重要.
研究的目的:
- 为了记录SRM-484.4所使用的仪器仪表和测量程序.
- 详细说明确定与SRM-484校准相关的不确定性方法.
- 从最近的SRM-484问题 (484e和484f) 提供说明性数据.
主要方法:
- 用于高分辨率成像和维度计量学的特殊仪器.
- 实施精确的测量协议,以评估文物的认证特征.
- 采用已建立的统计方法来量化不确定性.
主要成果:
- 详细描述SRM-484,证实其适用于SEM放大校准.
- 为认证放大尺度建立了不确定性预算.
- 提交的数据证明了SRM-484问题484e和484f的一致性和可靠性.
结论:
- SRM-484为SEM放大校准提供了一个可靠的标准,在1000×到20000×范围内.
- 记录的程序确保了SRM-484认证的完整性和可追溯性.
- 这项工作支持在科学研究和工业中继续准确地使用SEM.
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