For fission of U-233-induced by polarized cold neutrons the dependence of t
he PNC asymmetry coefficient a(nf)(m(LF), TKE) on light fragment mass m(LF)
and total kinetic energy TKE was studied. Concurrently the angular distrib
ution predicted for PNC reactions was tested. Altogether more than 2x10(10)
fission events with high mass/ energy resolution have been collected. This
corresponds to an increase in the statistics compared to previous experime
nts (U. Graf, F. Gonnenwein, P. Geltenbort, et al., Z. Phys. A 351 (1995) 2
81 and V.A. Vesna, V.A. knyaz'kov, E.A. Kolomenskii et al., JETP. Lett. 31
(1980) 663) by a factor of about 20. The preliminary analysis of the PNC as
ymmetry shows no significant variation of alpha(nf) for different fragment
masses/energies, whereas the prediction concerning the angular dependence w
as confirmed with a precision not obtained up to now. (C) 2000 Elsevier Sci
ence B.V. All rights reserved.