Randomly Oriented Angular Momentum in Strongly Damped Collisions

R. A. Dayras; R. G. Stokstad; C. B. Fulmer; D. C. Hensley; M. L. Halbert; R. L. Robinson; A. H. Snell; D. G. Sarantites; L. Westerberg; J. H. Barker

doi:10.1103/PhysRevLett.42.697

Randomly Oriented Angular Momentum in Strongly Damped Collisions

R. A. Dayras, R. G. Stokstad, C. B. Fulmer, D. C. Hensley, M. L. Halbert, R. L. Robinson, A. H. Snell, D. G. Sarantites, L. Westerberg, and J. H. Barker

Phys. Rev. Lett. 42, 697 – Published 12 March 1979

Abstract

The first three moments of the $γ$ -ray multiplicity distribution and the out-of-plane $γ$ -ray anisotropy have been measured simultaneously as a function of mass asymmetry for the strongly damped products of the reaction ${}^{63}{Cu}$ with 168-MeV ${}^{20}{Ne}$ . The large variance of the multiplicity appears to be associated with the small anisotropy. These results indicate a random component of angular momentum which is comparable to the aligned component induced by tangential friction.

Received 30 October 1978

DOI:https://doi.org/10.1103/PhysRevLett.42.697

Authors & Affiliations

R. A. Dayras^*, R. G. Stokstad, C. B. Fulmer, D. C. Hensley, M. L. Halbert, R. L. Robinson, and A. H. Snell

Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830

D. G. Sarantites and L. Westerberg^†

Department of Chemistry, Washington University, St. Louis, Missouri 63130

J. H. Barker

Department of Physics, St. Louis University, St. Louis, Missouri 63103

^*Present address: Service de Physique Nucléaire, Centre d'Etudes de Bruyères-le-Châtel, B. P. No. 561, 92542 Montrouge, France.
^†Present address: Institute of Physics, University of Uppsala, Uppsala, Sweden.