Abstract
Use of small-angle and ultra-small angle scattering instruments in a tandem provides a unique opportunity of exploring sample structure on the length scales between Angstroms and microns in a single experiment. This chapter considers major types and components of small-angle neutron and x-ray scattering instruments. Constant flux instrumentation is discussed based on the General Purpose SANS diffractometer (HFIR, ORNL) and the double-crystal USANS instrument (NCNR, NIST). Operational principles and major components of time-of-flight SAS instrumentation are considered based on the Extended Q SANS and the Time-Of-Flight USANS instruments (SNS, ORNL). X-ray SAS instrumentation is discussed based on SAXS and USAXS diffractometers available at APS, ANL. Advantages and disadvantages of the constant flux and time-of-flight instruments for various types of experiments and different systems are discussed and illustrative examples of the scattering data obtained from various samples using SANS/USANS and SAXS/USAXS instruments are presented.
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Melnichenko, Y.B. (2016). Constant Flux and Time-of-Flight Instrumentation. In: Small-Angle Scattering from Confined and Interfacial Fluids. Springer, Cham. https://doi.org/10.1007/978-3-319-01104-2_3
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DOI: https://doi.org/10.1007/978-3-319-01104-2_3
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