منابع مشابه
Liquid refractometer based on immersion diffractometry.
This study presents a laser diffractometric refractometer for measuring the refractive index of liquids. The refractive index is determined by rotating a reflection grating that is immersed in the fluid under test, and measuring the first-order Littrow diffraction angle. The Littrow angle is easily detected form the interferogram formed by the diffracted beam from the grating and the reflected ...
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A Mössbauer powder diffractometer was used to measure diffraction patterns from polycrystalline foils of Fe3Al. The intensities of Bragg diffractions were measured as a function of the energy of the incident photon. The bcc fundamental diffractions showed large changes in intensity as the incident energy was tuned through the nuclear resonances. These variations of diffraction intensity with in...
متن کاملTemperature Discrepancies in High Temperature Diffractometry
Measurements using a Pt-Rh heater strip in a high temperature X-ray diffractometer furnace show that the temperature indicated by a two-colour infra-red pyrometer directed at the upper surface of the strip is within fl “C of the temperature indicated by a Pt/Pt-lO%Rh (type S) thermocouple welded to the lower surface, over the temperature range from 600-l 100 “C. However, the temperature of a po...
متن کاملImmunomagnetic diffractometry for detection of diagnostic serum markers.
We describe an integrated approach for detection of diagnostic markers using in situ assembled optical diffraction gratings in combination with immunomagnetic capture. Folate receptor (FR), a serum protein indicative of various cancers, was chosen as a model system to demonstrate the potential of the method. Magnetic beads coupled to FR antibody were used to capture FR from serum. The FR-bound ...
متن کاملParallel Beam Powder Diffractometry Using a Laboratory X-Ray Source
We report on the application of a new, non-dispersive double multilayer optical arrangement to prepare a parallel beam from a laboratory x-ray source for standardization of powder diffraction reference materials and the associated high accuracy diffractometer. The beam preparation optic uses a graded-spacing parabolic multilayer to gather radiation from a small focus x-ray source and a subseque...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 2012
ISSN: 0108-7673
DOI: 10.1107/s010876731209839x