Correlated spins of complementary fragment pairs in the spontaneous fission of [Formula Presented]

A. G. Smith, G. S. Simpson, J. Billowes, P. J. Dagnall, J. L. Durell, S. J. Freeman, M. Leddy, W. R. Phillips, A. A. Roach, J. F. Smith, A. Jungclaus, K. P. Lieb, C. Teich, B. J.P. Gall, F. Hoellinger, N. Schulz, I. Ahmad, J. P. Greene, A. Algora

Research output: Contribution to journalArticle

Abstract

A study of the [Formula Presented]-ray decay of low-lying excited states in fragments produced in the spontaneous fission of [Formula Presented] has revealed a significant correlation between the angles of emission of the [Formula Presented] transitions of complementary fragment pairs. Calculations of the amount of dealignment that is needed to reproduce the measured [Formula Presented] values, and a comparison with the results of previous fragment-[Formula Presented] angular distribution measurements, suggests that at scission there may be significant population of [Formula Presented] substates associated with the projection of the fragment spin vector on the fission axis. Fragments from the spontaneous fission of [Formula Presented] emit [Formula Presented] rays that show markedly reduced interfragment correlations, suggesting that either a larger role is played by the relative angular momentum of the fragments, or that the dealignment introduced by the neutron emission and statistical [Formula Presented] decay to the [Formula Presented] state is larger in [Formula Presented] than [Formula Presented] fission.

Original languageEnglish
Number of pages1
JournalPhysical Review C - Nuclear Physics
Volume60
Issue number6
DOIs
Publication statusPublished - Jan 1 1999

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Smith, A. G., Simpson, G. S., Billowes, J., Dagnall, P. J., Durell, J. L., Freeman, S. J., Leddy, M., Phillips, W. R., Roach, A. A., Smith, J. F., Jungclaus, A., Lieb, K. P., Teich, C., Gall, B. J. P., Hoellinger, F., Schulz, N., Ahmad, I., Greene, J. P., & Algora, A. (1999). Correlated spins of complementary fragment pairs in the spontaneous fission of [Formula Presented]. Physical Review C - Nuclear Physics, 60(6). https://doi.org/10.1103/PhysRevC.60.064611