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Meson-Induced Fission
Phys. Rev. 84, 254 – Published 15 October, 1951
DOI: https://doi.org/10.1103/PhysRev.84.254
Abstract
Several batches of plates loaded with uranyl acetate have been exposed to mesons in the Berkeley cyclotron. The mesons were generated by the 350-Mev proton beam striking a carbon target and the plates were shielded from the direct beam, or positive particles generated at the target, by several inches of copper. They received negative mesons over a wide range of energies. About one in a hundred of the mesons observed to end in these plates, ended in a characteristic fission event. Twenty-two such fissions were observed. This was in rough qualitative agreement with what might be expected if it is assumed that the capture of a negative -meson by the uranium nucleus always produces fission. Three of these events showed 3-way fission, a light particle coming off at about 90° to the tracks of the heavy fission fragments.
References (11)
- Stephen Tamor, Phys. Rev. 77, 412 (1950)
- Menon, Muirhead, and Rochat, Phil. Mag. 41, 583 (1950)
- Gardner, Barkas, Smith, and Bradner, Science 111, 191 (1950)
- San-Tsiang, Zah-Wei, Vigneron, and Chastel, Nature 159, 773 (1947)
- Wollan, Moak, and Sawyer, Phys. Rev. 72, 447 (1947)
- L. L. Green and D. L. Livesey, Nature 158, 272 (1946) 159, 332 (1947)
- Leona Marshall, Phys. Rev. 75, 1339 (1949)
- E. Broda, J. Sci. Instr. 24, 156 (1947)
- H. Yagoda, Radioactive Measurements with Nuclear Emulsions (John Wiley and Sons, Inc., New York, 1949)
- E. Fermi and E. Teller, Phys. Rev. 72, 399 (1947)
- J. Jungerman and S. C. Wright, Phys. Rev. 76, 1112 (1949)