Neutron Debye-Scherrer diffraction works using a linear electron accelerator

https://doi.org/10.1016/0029-554X(69)90088-3Get rights and content

Abstract

Neutron diffraction patterns were obtained by the time-of-flight method using Tohoku linac for the case of powdered samples as well as for single crystals. Thermal neutron beams of 35–50 μsec pulse width were obtained by poisoned water moderator. Powder patterns of Al at different temperatures have shown many lines of high indices, which enabled to calculate the Debye temperature with considerable accuracy. Several other powdered samples including Si, ZnO were also examined. Magnetic peaks of α-Fe2O3, CaFe2O4 were identified.

Count collecting time of 2 or 3 h was enough to reach the reliability R to the level of a several percent. High index lines appeared very conspicuously, in contrast to the reactor-chopper results.

The fwhm of the diffraction lines was 2.0–1.5% in case the scattering angle 2θ was 90°. It depended on the energy of diffracting neutrons, becoming smaller for neutrons of wavelength shorter than 1 Å, that is for higher index lines.

References (11)

  • J.M.A. Reichelt et al.

    Nucl. Instr. and Meth.

    (1966)
  • R.M. Brugger et al.

    Phys. Letters

    (1967)
  • B. Buras et al.

    Nucleonica

    (1963)
  • B. Buras

    Nucleonica

    (1963)
  • B. Buras et al.

    Phys. Stat. Sol.

    (1964)
There are more references available in the full text version of this article.

Cited by (14)

  • Diffraction with X-rays and neutrons

    2023, Non-Destructive Material Characterization Methods
  • Neutronics of a poisoned para-hydrogen moderator for a pulsed spallation neutron source

    2007, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
View all citing articles on Scopus
View full text