Table of Contents
Textures and Microstructures
Volume 8 –9
http://dx.doi.org/10.1155/TSM.8-9.443

Texture Analysis by TOF Measurements of Spallation Neutrons With a 2D-Position Sensitive Detector

1Department of Geology and Geophysics, University of California, Berkeley, CA 94720, USA
2LANSCE, Los Alamos National Laboratory, Los Alamos, NM 87545, USA

Received 3 July 1987

Copyright © 1988 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new method is introduced to measure preferred crystallographic orientation in deformed polycrystals. A pulsed beam of protons is accelerated in the linear accelerator at Los Alamos. The beam is then compressed in time in a storage ring and directed towards a W spallation target producing bursts of pulsed neutrons of 0.25 μs duration. The neutron beam (107 n cm−2s−1) is scattered by the polycrystal sample and diffractions, including time of flight of neutrons, are recorded on a 2D detector. This offers both simultaneous coverage of a wide d spectrum (many peaks) and a large orientation region (pole figure segment). Results on Al polycrystals obtained with this instrument agree well with pole figures measured by conventional X-ray diffraction.