A high-temperature Bonse--Hart ultrasmall-angle x-ray scattering instrument

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1144465· OSTI ID:6535886

Chu, B; Li, Y; Harney, P J; Yeh, F ^[1]

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1. Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794-3400 (United States)

A Bonse--Hart ultrasmall-angle x-ray scattering (USAXS) instrument has been designed, constructed, and tested employing a synchrotron x-ray source. The instrument permits experiments ranging from below 0 [degree]C up to about 400 [degree]C, as well as temperature scanning, jumping, quenching, and annealing experiments. The mechanical elements used Super Invar as the basic building material in order to minimize the thermal expansion effect. As the synchrotron beam after the beamline optics is already somewhat collimated and monochromatized, a very fine tuning of the first crystal was necessary. The high-temperature Bonse--Hart instrument increased the performance by a factor of about 10 when compared with our earlier room-temperature Bonse--Hart instrument using the same set of channel-cut germanium crystals. The instrument was tested by using a suspension of polystyrene latex spheres and by combining the USAXS measurement, for the first time, with measurements of the same latex suspension by means of laser light scattering.

• DOE Contract Number: FG02-86ER45237; FG05-89ER75515
• OSTI ID: 6535886
• Journal Information: Review of Scientific Instruments; (United States), Journal Name: Review of Scientific Instruments; (United States) Vol. 64:6; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
430400 -- Particle Accelerators-- Storage Rings
ACCELERATORS
BREMSSTRAHLUNG
COHERENT SCATTERING
CYCLIC ACCELERATORS
DIFFRACTION
DIFFRACTOMETERS
DISPERSIONS
ELASTOMERS
ELECTROMAGNETIC RADIATION
LATEX
MEASURING INSTRUMENTS
NSLS
OPERATION
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PERFORMANCE
POLYMERS
RADIATION SOURCES
RADIATIONS
RUBBERS
SCATTERING
SUSPENSIONS
SYNCHROTRON RADIATION
SYNCHROTRON RADIATION SOURCES
SYNCHROTRONS
X-RAY DIFFRACTION
X-RAY DIFFRACTOMETERS