Extended Coupled-Channels Model and the ¹¹B(p,γ₁)¹²C^* Reaction:

Abstract

A theoretical procedure is developed for including intermediate coupling model wave functions for the A = 11 and 12 systems in the coupled-channels reaction theory in the r-representation. The corresponding E1 transition amplitude is defined, and the total ¹¹B(p,γ₁) cross section is calculated from 1^-, 2^- and 3^- initial states to the 2⁺, 4.43 MeV state in ¹²C. The theory qualitatively reproduces the resonance structure in the excitation function. The consequences of certain simplifying features, such as the neglect of the Pauli term in the s-wave channel, are discussed.

Author notes

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Present address: Brookhaven National Laboratory, National Nuclear Data Center, Bldg. 197D, Upton, N. Y. 11973.

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Deceased.

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Laboratoire associe au Centre National de la Recherche Scientifique.