NIST Standard Reference Material 3600: Absolute Intensity Calibration Standard for Small-Angle X-ray Scattering.
NIST Standard Reference Material 3600: Absolute Intensity Calibration Standard for Small-Angle X-ray Scattering.
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DOI：
10.1107/s1600576717001972
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发表时间：
2017-04-01
影响因子：
6.1
通讯作者：
Ilavsky J
中科院分区：
文献类型：
--
作者：
Allen AJ;Zhang F;Kline RJ;Guthrie WF;Ilavsky J
描述了用于校准小角X射线散射强度的新的NIST标准参考物质(SRM)的认证，包括SRM的目的、用途和适用性，以及所提供的强度校准的局限性和不确定度。介绍了一种新的基于玻碳的小角散射标准物质[NIST标准物质(SRM)3600：小角X射线散射绝对强度校准标准(SAXS)]的认证。这种SRM的创建依赖于超小角X射线散射技术固有的一次校准能力。本文描述了如何在认证的Q范围内实现和验证强度校准，Q=0.008-0.25 ä−1，以及SRM的目的、用途和可用性。这种坚固而稳定的SRM提供的强度校准应该普遍适用于所有采用透射式测量几何结构的SAXS仪器，使用广泛的X射线能量或波长工作。讨论了使用小角中子散射(SANS)对SRM SAXS强度校准的验证，以及将SANS纳入未来更新认证的前景。
The certification of a new NIST standard reference material (SRM) for the calibration of small-angle X-ray scattering intensity is described, including the purpose, use and applicability of the SRM together with limitations and uncertainties in the intensity calibration provided. The certification of a new standard reference material for small-angle scattering [NIST Standard Reference Material (SRM) 3600: Absolute Intensity Calibration Standard for Small-Angle X-ray Scattering (SAXS)], based on glassy carbon, is presented. Creation of this SRM relies on the intrinsic primary calibration capabilities of the ultra-small-angle X-ray scattering technique. This article describes how the intensity calibration has been achieved and validated in the certified Q range, Q = 0.008–0.25 Å−1, together with the purpose, use and availability of the SRM. The intensity calibration afforded by this robust and stable SRM should be applicable universally to all SAXS instruments that employ a transmission measurement geometry, working with a wide range of X-ray energies or wavelengths. The validation of the SRM SAXS intensity calibration using small-angle neutron scattering (SANS) is discussed, together with the prospects for including SANS in a future renewal certification.