Neutron backscattering

Science with Neutrons
Foundations
Neutron temperature Flux · Radiation · Transport Cross section · Absorption · Activation
Neutron scattering
Neutron diffraction Small-angle neutron scattering GISANS Reflectometry Inelastic neutron scattering Triple-axis spectrometer Time-of-flight spectrometer Backscattering spectrometer Spin-echo spectrometer
Other applications
Radiography and tomography Activation analysis · Prompt gamma activation analysis Fundamental research with neutrons: Ultracold neutrons · Interferometry
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America: HFIR · LANSCE · NIST CNR -SNS Australia: OPAL Asia: J-PARC Europe: BER II · FRM II · ILL · ISIS · JINR · LLB · PINS · SINQ Historic: IPNS · HFBR Planned: ESS User Affiliations: ENSA
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Neutron backscattering is one of several inelastic neutron scattering techniques. Backscattering from monochromator and analyzer crystals is used to achieve an energy resolution in the order of μeV. Neutron backscattering experiments are performed to study atomic or molecular motion on a nanosecond time scale.

External links

Existing backscattering spectrometers at reactors:

• IN10 at the Institut Laue-Langevin
• IN13 at the Institut Laue-Langevin
• IN16 at the Institut Laue-Langevin
• High flux backscattering spectrometer (HFBS) at NIST
• SPHERES, an instrument of Forschungszentrum Jülich at FRM II

Inverse geometry spectrometers at spallation sources:

• IRIS at ISIS at Rutherford-Appleton
• OSIRIS at ISIS at Rutherford-Appleton
• BASIS at SNS
• MARS at Paul Scherrer Institute

Historic instruments:

• the first backscattering spectrometer was a temporary setup at FRM I: B. Alefeld, M. Birr, A. Heidemann, Naturwissenschaften 56, 410 (1969)

• backscattering spectrometer BSS (also called PI) at the DIDO reactor of the Forschungszentrum Jülich (decommissioned)

A historical and updated review on neutron backscattering and its applications can be found on WEB-site of Neutron Backscattering Spectroscopy and a more recent version of it [1]

Literature

• Heinz Maier-Leibnitz: Grundlagen für die Beurteilung von Intensitäts- und Genauigkeitsfragen bei Neutronenstreumessungen, Nukleonik 8, 61 (1966).