Glassy Carbon as an Absolute Intensity Calibration Standard for Small-Angle Scattering

• DOI: 10.1007/s11661-009-9950-x
• Publication Date: 2009-08-18T15:23:53Z
• Authors: Fan Zhang; Jan Ilavsky; Gabrielle G. Long; John P. G. Quintana; Andrew J. Allen; Pete R. Jemian
• Keywords: Intensity; Small-Angle Scattering; Glassy carbon

Absolute calibration of small-angle scattering (SAS) intensity data (measured in terms the differential cross section per unit sample volume solid angle) is essential for many important aspects quantitative SAS analysis, such as obtaining number density, fraction, and specific surface area scatterers. It also enables from different instruments (light, X-ray, or neutron scattering) to be combined, it can even useful detect existence artifacts experimental data. Different primary secondary methods are available. In latter case, absolute requires a stable artifact with necessary profile. Glassy carbon has sometimes been selected this standard. Here we review spatial homogeneity temporal stability one type commercially available glassy that being used an standard at facilities. We demonstrate sufficiently homogeneous during routine use relied upon suitable