Comparison of SANS instruments at reactors and pulsed sources
- Argonne National Lab., IL (United States)
- Los Alamos National Lab., NM (United States)
Small angle neutron scattering is a general purpose technique to study long range fluctuations and hence has been applied in almost every field of science for material characterization. SANS instruments can be built at steady state reactors and at the pulsed neutron sources where time-of-flight (TOF) techniques are used. The steady state instruments usually give data over small q ranges and in order to cover a large q range these instruments have to be reconfigured several times and SANS measurements have to be made. These instruments have provided better resolution and higher data rates within their restricted q ranges until now, but the TOF instruments are now developing to comparable performance. The TOF-SANS instruments, by using a wide band of wavelengths, can cover a wide dynamic q range in a single measurement. This is a big advantage for studying systems that are changing and those which cannot be exactly reproduced. This paper compares the design concepts and performances of these two types of instruments.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38; W-7405-ENG-36
- OSTI ID:
- 10183851
- Report Number(s):
- ANL/CP-77200; LA-UR-92-3270; CONF-9209225-1; ON: DE92041120; TRN: 92:036005
- Resource Relation:
- Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
07 ISOTOPES AND RADIATION SOURCES
SMALL ANGLE SCATTERING
MEASURING INSTRUMENTS
NEUTRON DIFFRACTION
FLUCTUATIONS
NEUTRON SOURCES
DESIGN
DATA ACQUISITION SYSTEMS
CALIBRATION
CROSS SECTIONS
440100
070201
RADIATION INSTRUMENTATION
DESIGN, FABRICATION, AND OPERATION