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Measurement of the Neutron Total Cross Section of U233 from 0.07 to 10,000 ev

N. J. Pattenden, J. A. Harvey

Nuclear Science and Engineering

Volume 17 / Number 3 / November 1963 / Pages 404-410


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The neutron total cross section of U233 was measured from 0.07 to 10,000 ev, using the ORNL fast chopper time-of-flight neutron spectrometer. Below 30 ev the neutron energy resolution varied from 0.7 to 1.5% and above 30 ev it was 60 nanosec/meter. A description is given of the measurements, the samples, and some of the errors in the measurements. The errors on the total cross section data are estimated to be from ±0.6 to 1.1% below 1 ev, from 1.1 to 2.5% between 1 and 100 ev, and from 1.5 to 5.5% above 100 ev.

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