Hostname: page-component-848d4c4894-5nwft Total loading time: 0 Render date: 2024-06-06T13:16:04.410Z Has data issue: false hasContentIssue false
  • English
  • Français

The yield of 139Ba in the fission of natural uranium by fast and slow neutrons

Published online by Cambridge University Press:  24 October 2008

E. Broda ,
L. Kowarski  and
D. West
E. Broda
Affiliation:
Cavendish LaboratoryCambridge
L. Kowarski
Affiliation:
Cavendish LaboratoryCambridge
D. West
Affiliation:
Cavendish LaboratoryCambridge
Get access Rights & Permissions [Opens in a new window]

Abstract

The yields of 139Ba per fission in natural uranium by unslowed neutrons from a mixed radium-beryllium source and by C-group neutrons were compared. In each case the fission rates measured with an ionization chamber were correlated with the β-ray activity of 139Ba, chemically extracted from a mass of uranium oxide exposed to an identical neutron spectrum. The ratio of the two fission yields is found to be 0·84 ± 0·03. The possibility of using 139Ba as a local or integrating indicator of fission in extended uraniferous media, and of distinguishing between the contributions by fast neutrons and by slow neutrons is discussed.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 44 , Issue 1 , January 1948 , pp. 124 - 132
Copyright
Copyright © Cambridge Philosophical Society 1948

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Booker, , Kingdon, and Kowarski, . Atomic Energy Report, unpublished (1944).Google Scholar
Booth, and Hurst, . Proc. Roy. Soc. A, 161 (1937), 248.Google Scholar
Broda, . Atomic Energy Reports, unpublished (1943, 1944).Google Scholar
Broda, , Grummitt, , Guéron, , Kowarski, and Wilkinson, . Atomic Energy Reports, unpublished (1942, 1943).Google Scholar
Broda, and Wright, . Nature, Lond., 158 (1946), 871.CrossRefGoogle Scholar
Fermi, , Anderson, and Szilard, . Phys. Rev. 56 (1939), 284.CrossRefGoogle Scholar
Grummitt, and Wilkinson, . Nature, Lond., 158 (1946), 163.CrossRefGoogle Scholar
Hahn, and Strassmann, . Naturwissenschaften, 27 (1939), 11.CrossRefGoogle Scholar
Hahn, and Strassmann, . Naturwissenschaften, 30 (1942), 325.Google Scholar
Libby, . Phys. Rev. 55 (1939), 1269.CrossRefGoogle Scholar
Nishina, , Yasaki, , Ezoe, , Kimura, and Ikawa, . Nature, Lond., 146 (1940), 24.CrossRefGoogle Scholar
Paneth, , Glückauf, and Loleit, . Proc. Roy. Soc. A, 157 (1936), 412.Google Scholar
Siegel, . J. American Chem. Soc. 68 (1946), 2411.Google Scholar