Diffraction at HFIR
- ORNL
Of the planned suite of powder and single-crystal diffractometers for the HFIR, only two are currently operating, the Neutron Residual Stress Mapping Facility (NRSF2) diffractometer, and the Wide Angle Neutron Diffractometer (WAND). The NSRF2 was recently upgraded and is available to external users via the High Temperature Materials Laboratory (HTML) User Program for studies of stress, texture and phase mapping. The WAND is a flat-cone geometry diffractometer equipped with a curve 1-D PSD, suitable for high intensity powder diffraction (e.g., kinetics, high pressure) and diffuse scattering studies of single-crystals. A rebuild of the old HFIR powder diffractometer, originally located at HB-4 station is now underway, and is expected to begin commissioning by summer 2008. This instrument has a Debye-Scherrer geometry, with a detector bank consisting of 44 3He tubes each with 6' Soller collimators. A four-circle single-crystal diffractometer is located at the HB-3A station, and is slowly being brought back to life after the long hiatus connected to the reactor upgrade. A Letter of Intent to build a quasi-Laue diffractometer, called IMAGINE, in the HFIR Cold Guide Hall has been presented to and endorsed by the Neutron Scattering Science Advisory Committee.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 958842
- Journal Information:
- Neutron News, Vol. 19, Issue 2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Calibration of NRSF2 Instrument at HFIR
The First Neptunium Dioxide Neutron Diffraction Experiment at HFIR
Related Subjects
ADVISORY COMMITTEES
COLLIMATORS
COMMISSIONING
DIFFRACTION
DIFFRACTOMETERS
DIFFUSE SCATTERING
GEOMETRY
KINETICS
MONOCRYSTALS
NEUTRON DIFFRACTOMETERS
NEUTRONS
SCATTERING
TEXTURE
neutron diffraction
HFIR
residual stress
powder diffraction
single-crystal diffraction