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E. E. Gross; E. Newman; M. B. Greenfield; R. W. Rutkowski; W. J. Roberts; A. Zucker

doi:10.1103/PhysRevC.5.602

Charge-Asymmetry Effects in the Reaction ${}^{2}H$ ( ${}^{4}{He}$ , ${}^{3}{He}$ ) ${}^{3}H$

E. E. Gross, E. Newman, M. B. Greenfield, R. W. Rutkowski, W. J. Roberts, and A. Zucker

Phys. Rev. C 5, 602 – Published 1 March 1972

Abstract

Differential cross sections for the process ${}^{2}H$ ( ${}^{4}{He}$ , ${}^{3}{He}$ ) ${}^{3}H$ are presented for ${}^{4}{He}$ beam energies of 82.1, 64.3, and 49.9 MeV. The measurements were made to test the Barshay-Temmer theorem which requires ${}^{3}H$ and ${}^{3}{He}$ yields to be independently symmetric about 90° c.m. We find a pronounced deviation from 90° c.m. symmetry which is angle- and energy-dependent. A distorted-wave Born-approximation analysis assuming the reaction mechanism to be a simple $l = 0$ nucleon-pickup process can qualitatively account for the observed deviations.

Received 15 November 1971

DOI:https://doi.org/10.1103/PhysRevC.5.602

Authors & Affiliations

E. E. Gross^*, E. Newman, M. B. Greenfield^†, R. W. Rutkowski^‡, W. J. Roberts^§, and A. Zucker^∥

Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830

^*On leave from Oak Ridge National Laboratory; present address: Niels Bohr Institute, Copenhagen, Denmark.
^†Graduate Fellow from the University of Tennessee, supported by an Army Research Office grant; present address: Florida State University, Tallahassee, Fla.
^‡Oak Ridge Graduate Fellow from the University of Tennessee under appointment from Oak Ridge Associated Universities; present address: U. S. Atomic Energy Commission, Oak Ridge, Tenn.
^§Oak Ridge Graduate Fellow from the University of Tennessee under appointment from Oak Ridge Associated Universities.
^∥On leave from Oak Ridge National Laboratory; present address: National Academy of Sciences, Washington, D.C.

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Vol. 5, Iss. 3 — March 1972

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Physical Review C

covering nuclear physics