Measurements on the Diffusion Length of Thermal Neutrons in Water from 25 to 296°C
- 1 July 1960
- journal article
- research article
- Published by Taylor & Francis in Nuclear Science and Engineering
- Vol. 8 (1) , 62-65
- https://doi.org/10.13182/nse8-1-62
Abstract
The diffusion length of thermal neutrons has been measured in water over the range 25.9 to 295.3°C in the pressure vessel of the KAPL High Temperature Critical Assembly. The diffusion length was determined by fitting an exponential to the data found by activating manganese foils with neutrons from a small Sb-Be source. The temperature variation of the diffusion length could be fairly well represented by either of two simple approximations—either that the transport cross section of water has a 1/υ behavior, or that the transport cross section is determined from the Radkowsky prescription.Keywords
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