Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-20T16:20:39.687Z Has data issue: false hasContentIssue false
  • English
  • Français

XVIII.—The Emission of Long-Range Alpha Particles in Fission

Published online by Cambridge University Press:  14 February 2012

N. Feather
N. Feather
Affiliation:
Department of Natural Philosophy, University of Edinburgh
Get access Rights & Permissions [Opens in a new window]

Extract

It is generally agreed that the long-range alpha particles of fission are set free before the fragment nuclei have acquired more than a small fraction of their final energy of separation, but whether the alpha particle is liberated before the instant of scission, at that instant, or from one of the fragment nuclei very shortly thereafter, has remained an open question. Each of these views has been seriously advocated. These various hypotheses are examined in relation to recently published information regarding the distribution of mass in low-eneigy ternary fission, and other considerations, and it is suggested that the hypothesis having the strongest claim to attention is that which assumes that the alpha particles originate in the heavy fragments exclusively, being liberated, very shortly after the instant of scission, with probability not much less than unity, from fragment nuclei of low yield and small neutron excess. Conclusions which would follow, if this hypothesis were accepted, are indicated, and possible experimental tests of these conclusions are suggested.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh Section A: Mathematics , Volume 66 , Issue 3 , 1963 , pp. 192 - 209
Copyright
Copyright © Royal Society of Edinburgh 1963

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 to Literature

Aplin, V. F., Dobrynin, Y. P., Zakharova, V. P., Kutikov, I. E., and Mikaelyan, L. A., 1960. J. Nuclear Energy, 13A, 86–87.Google Scholar
Bowman, H. R., Milton, J. C. D., Thompson, S. G., and Swiatecki, W. J., 1963. Phys. Rev., 129, 2133–2147.CrossRefGoogle Scholar
Bowman, H. R., Thompson, S. G., Milton, J. C. D., and Swiatecki, W. J., 1962. Phys. Rev., 126, 2120–2136.CrossRefGoogle Scholar
Dmitriev, V. N., Drapchinskii, L. V., Petrzhak, K. A., and Romanov, Y. F., 1961. Soviet Phys. JETP, 12, 390–394.Google Scholar
Feather, N., 1947. Nature, Lond., 159, 607–608.CrossRefGoogle Scholar
Fulmer, C. B., and Cohen, B. L., 1957. Phys. Rev., 108, 370–372.CrossRefGoogle Scholar
Halpern, I., 1959. Ann. Rev. Nuclear Sri., 9, 245–342.CrossRefGoogle Scholar
Kapoor, S. S., Ramanna, R., and Rama Rao, P. N., 1963. Phys. Rev., 131, 283–296.CrossRefGoogle Scholar
König, L. A., Mattauch, J. H. E., and Wapstra, A. H., 1962. Nuclear Phys., 31, 18–42.CrossRefGoogle Scholar
Mather, D. S., Fieldhouse, P., and Moat, A., 1964. Phys. Rev. 133, 1403–1420.CrossRefGoogle Scholar
Michaudon, A., Lottin, A., and Paya, D., 1963. C.R. Acad. Sci. Paris, 256, 1490–1493.Google Scholar
Muga, M. L., Bowman, H. R., and Thompson, S. G., 1961. Phys. Rev., 121, 270–274.CrossRefGoogle Scholar
Nobles, R. A., 1962. Phys. Rev., 126, 1508–1513.CrossRefGoogle Scholar
Panov, A. A., 1963a. Soviet Phys. JETP, 16, 599–602.Google Scholar
Panov, A. A., 1963b. Soviet Phys. JETP, 16, 1408–1409.Google Scholar
Perfilov, N. A., and Solov'eva, Z. I., 1959. J. Nuclear Energy, 10A, 89–90.Google Scholar
Perfilov, N. A., and Solov'eva, Z. I., 1960. Soviet Phys. JETP, 10, 824–825.Google Scholar
Ramanna, R., Nair, K. G., and Kapoor, S. S., 1963. Phys. Rev., 129, 1350–1354.CrossRefGoogle Scholar
Schmitt, H. W., and Feather, N., 1964. Phys. Rev., in the press.Google Scholar
Schmitt, H. W., Neiler, J. H., Walter, F. J., and Chetham-Strode, A., 1962. Phys. Rev. Lett., 9, 427–429.CrossRefGoogle Scholar
Seeger, P. A., 1961. Nuclear Phys., 25, 1–135.CrossRefGoogle Scholar
Solov'eva, Z. I., and Filov, R. A., 1963. Soviet Phys. JETP, 16, 809–810.Google Scholar
Titterton, E. W., 1951. Nature, Lond., 168, 590–591.CrossRefGoogle Scholar
Troutner, D. E., Ferguson, R. L., and O'Kelley, G. D., 1963. Phys. Rev., 130, 1466–1470.CrossRefGoogle Scholar
Vandenbosch, R., 1963. Nuclear Phys., 46, 129–410.CrossRefGoogle Scholar
Wahl, A. C., Ferguson, R. L., Nethaway, D. R., Troutner, D. E., and Wolfsberg, K., 1962. Phys. Rev., 126, 1112–1127.CrossRefGoogle Scholar