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Methoden und Instrumentierung Poster: Mi., 14:00–16:30 M-P61
Towards measured pole figures error reduction
Dmitry Nikolayev 1
1 Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna,
141980, Moscow region, Russia
Pole figures are the source of the primary information in the conventional quantitative
texture analysis. Therefore it is very important to measure pole figures with highest
possible accuracy. The main sources of errors are the number of grains that are
in reflecting position, beam intensity, instrumental function, signal background ratio
etc. [1,2]. Instead of traditional way of neutron texture measurements, it is possible
to measure quantities that are averages along circles of pole figures. These functions
have smaller then pole figures experimental errors, cold be measured faster, from one
hand, and could be used for pole figures and orientation distribution function reconstruction
from the other. Results of the first such experiments that are fulfilled at
SKAT difractometer (Dubna) [3] are presented as well as ways how pole figures cold
be reconstructed from these functions. The present work is supported by INTAS grant
No 03-51-6092.
References
[1]. D.I. Nikolayev et al. Solid State Phenomena Vol. 105, July 2005, Trans Tech
Publications Proc. of ITAP 2, Metz , France, pp. 77-82
[2]. D.I. Nikolayev et al. Materials Science Forum Vols. 495-497, Sep. 2005, Trans
Tech Publications Proc. of ICOTOM 14, pp. 307-312
[3] K. Ullemeyer et al. Nucl. Instr. And Meth. A 1998, Vol. 412 , p.80-88