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The neutron capture cross section and f i s s i o n cross section far 2 3 3 ~ have been measured simultaneously in the neutron energy range from 0.4 t o 1000 eV. The data a r e presented i n graphical, tabular, and i n t e g r a l farm. Cornpaxisons w i t h previously published data, using similar and different methods, are given, *Work sponsored by the U, 5. Atomic Energy Commission under contracts w i t h Oa& Ri'dge National Labosatoq ( W-"/o? -eng-26) and Rensselaer Polytechnic Ins.titute [.AT( 30-3) -328 1, *Dep&rtment of' Nuclear Engineering and Science, Rensselaer Polytechnic I n s t i k t e . +Presen.t address: Los AIwos S c i e n t i f i c Laboratory.NOTICE This rlnrtfimertt rmtoin(i infmnntim atid was p r p p d primarily far internal use ot Laboratory. Ir i s subjec? tc revision or corre not tqxesent a final report. preliminary noturn Oak Ridge lrlotionul end therefare does DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government.

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Neutron radiative capture in Na, Al, Fe, and Ni has been measured from 100 eV to 200 keV with a 1.25-m-diam liquid scintillator detector at the Rensselaer LINAC Laboratory. Radiation widths were determined for those resonances whose neutron widths are well known, while the resonance capture areas (-wave neutrons, and from these data />-wave strength functions of (O.lOrLO.04) XlCr~4 and (0.04±0.03) X 10~4 were determined, respectively, for 58 Fe and 58 Ni. These strength functions are probably just upper limits to the true ^-wave strength functions and are an order of magnitude smaller than optical-model predictions.* Taken in part from the thesis submitted to Rensselaer Polytechnic Institute by R. W. Hockenbury in August, 1967, in partial fulfillment of the requirements for the Ph.D. degree.