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The study of five-fold (P even, T odd) correlation in the interaction of slowpolarized neutrons with aligned nuclei is a possible way of testing the timereversal invariance due to the expected enhancement of T violating effects incompound resonances. Possible nuclear targets are discussed which can bealigned both dynamically as well as by the "brute force" method at lowtemperature. A statistical estimation is performed of the five-fold correlationfor low lying p wave compound resonances of the $^{121}$Sb, $^{123}$Sb and$^{127}$I nuclei. It is shown that a significant improvement can be achievedfor the bound on the intensity of the fundamental parity conserving timeviolating (PCTV) interaction.Comment: 22 pages, 5 figures, published versio

Testing T invariance in the interaction of slow neutrons with aligned nuclei