Measurements of Deviation from 1/ E Distribution in Epi-Cadmium Neutron Spectrum
Open Access
- 1 April 1964
- journal article
- research article
- Published by Taylor & Francis in Journal of Nuclear Science and Technology
- Vol. 1 (1) , 1-6
- https://doi.org/10.1080/18811248.1964.9732067
Abstract
Although the neutron spectra in the epi-thermal region in thermal reactors are usually assumed to be of 1/E distribution, it is important in some cases to consider the deviation of the distrtribution from the 1/E shape. In this paper an approach to the representation of the reaction rate of the epi- cadmium energy neutron is presented, and a characteristic parameter defining the deviation from the 1/E shape is introduced. This parameter is useful in studying the spatial dependence of epi-cadmium neutron spectra in thermal reactors. It is shown that a 235U fission detector is one of the best detectors for this purpose. The measurement involved was performed by using a 235U fission counter in the SHE critical assembly. The experimental results obtained are compared with theoretical results, and the agreement between the two is good.Keywords
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