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Document Type

Research

Abstract

A single section accelerator tube built for 300 to 400 k.v. is used to accelerate a beam of deutrons obtained from a conventional arc discharge source. The beam impinges on a target of P2O5 + H22O producing neutrons according to the reaction H2+H2=H3+n. The target assembly is immersed in a tank of water which because of the elastic H1 and n collisions becomes a source of thermal neutrons. Detection is accomplished by placing a piece of silver in the tank. The silver becomes artificially beta radioactive by the well-known reactions Ag108+n→Ag109 and Ag109→Cd109+e-. Since the half-life of the beta activity is something over three · minutes there is ample time to remove the silver from the tank and detect the beta particles with a thin walled Geiger-Müller counter.

Publication Date

1939

Journal Title

Proceedings of the Iowa Academy of Science

Volume

46

Issue

1

First Page

266

Last Page

266

Copyright

© Copyright 1939 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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