Resonant Backward-Angle Heavy-Ion Elastic Scattering

M. R. Clover; R. M. DeVries; R. Ost; N. J. A. Rust; R. N. Cherry, Jr; H. E. Gove

doi:10.1103/PhysRevLett.40.1008

Resonant Backward-Angle Heavy-Ion Elastic Scattering

M. R. Clover, R. M. DeVries, R. Ost, N. J. A. Rust, R. N. Cherry, Jr., and H. E. Gove

Phys. Rev. Lett. 40, 1008 – Published 10 April 1978

Abstract

We observe strong structure in the excitation functions of ${}^{12}C$ + ${}^{28}{Si}$ backward-angle scattering. Angular distributions at the peaks of the elastic excitation function are of the form ${P_{J}}^{2} (cos θ)$ [approximately $J = 15$ ( $E_{c . m .} = 23.3$ MeV), $J = 18$ ( $E_{c . m .} = 26.0$ MeV), and $J = 18$ ( $E_{c . m .} = 30.2$ MeV)]. These results appear to be inconsistent with existing theoretical descriptions of anomalous backward-angle heavy-ion elastic scattering in this mass region.

Received 21 November 1977

DOI:https://doi.org/10.1103/PhysRevLett.40.1008

Authors & Affiliations

M. R. Clover, R. M. DeVries, R. Ost, N. J. A. Rust^*, R. N. Cherry, Jr.^†, and H. E. Gove

Nuclear Structure Research Laboratory, University of Rochester, Rochester, New York 14627

^*On leave from Merensky Institute for Physics, University of Stellenbosch, Stellenbosch, South Africa.
^†Present address: U. S. Army Environmental Hygiene Agency, Aberdeen Proving Ground, Md. 21010.