The Diffusion and Absorption of Neutrons in Paraffin Spheres

Yost, Don M. and Dickinson, Roscoe G. (1936) The Diffusion and Absorption of Neutrons in Paraffin Spheres. Physical Review, 50 (2). pp. 128-132. ISSN 0031-899X http://resolver.caltech.edu/CaltechAUTHORS:YOSpr36

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Abstract

Measurements are described of the activities imparted to silver and to indium detectors placed in paraffin spheres of various sizes with a radon-beryllium source of neutrons located at the center. The results are discussed with the aid of diffusion theory. Reasonably good quantitative agreement is obtained at distances from the source greater than about 8 cm. Various independent estimates are made of the mean free path of the neutrons in paraffin, their specific absorption rate constant, and the ratio of the latter to the diffusion constant. The mean free path is found as 0.53 cm; the ratio of the specific absorption rate constant to the diffusion constant as 0.026 cm^-2.

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©1936 The American Physical Society. Received 11 May 1936. The writers are indebted to Professor C.C. Lauritsen for helpful suggestions and the use of an electroscope, and to Mr. J.E. Walstrom for assistance in the preparation of the neutron sources. Gates Chemical Laboratory, Contribution No. 545.

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Other Numbering System Name	Other Numbering System ID
Gates Chemical Laboratory	545

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