On the Errors of the Experimental Pole Figures

The present work is devoted to the extraction of pole figures from time-of-flight neutron spectra withdifferent methods. Two aspects are mainly considered. The first one is to give a quantitative estimateof the errors in the extracted pole figures and to relate the errors of spectra to the errors of the polefigures. The second aspect is to elaborate criteria to determine the minimal exposure time, which isnecessary to accumulate a spectrum with an acceptable error level.