Method for Measuring Neutron-Absorption Cross Sections by the Effect on the Reactivity of a Chain-Reacting Pile

H. L. Anderson, E. Fermi, A. Wattenberg, G. L. Weil, and W. H. Zinn
Phys. Rev. 72, 16 – Published 1 July 1947
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Abstract

This paper describes a method for measuring neutron-absorption cross sections based on the following principle: Introduction of a neutron-absorbing substance into a pile decreases the reactivity and in order to keep the power level constant the control rods must be displaced. By proper calibration this displacement may be used as a precision measure of the absorption cross section.

  • Received 14 March 1947

DOI:https://doi.org/10.1103/PhysRev.72.16

©1947 American Physical Society

Authors & Affiliations

H. L. Anderson, E. Fermi, A. Wattenberg, G. L. Weil, and W. H. Zinn

  • Argonne Laboratory, University of Chicago, Chicago, Illinois

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Vol. 72, Iss. 1 — July 1947

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