Evidence for multistep processes in proton capture reactions

H. J. Hausman; S. L. Blatt; R. N. Boyd; T. R. Donoghue; R. G. Seyler; D. G. Marchlenski; T. W. Rackers; P. Schmalbrock; L. G. Arnold; M. A. Kovash; A. D. Bacher; C. C. Foster

doi:10.1103/PhysRevC.31.660

Evidence for multistep processes in proton capture reactions

H. J. Hausman, S. L. Blatt, R. N. Boyd, T. R. Donoghue, R. G. Seyler, D. G. Marchlenski, T. W. Rackers, P. Schmalbrock, L. G. Arnold, M. A. Kovash, A. D. Bacher, and C. C. Foster

Phys. Rev. C 31, 660 – Published 1 February 1985

Abstract

Proton capture populating the ${(7 / 2)}^{-}$ second-excited state in ${}^{7}{Be}$ , at an excitation energy of 4.57 MeV, is reported for the ${}^{6}{(p}$ ,γ $)^{7}$ Be reaction at a bombarding energy of 44.4 MeV. This state cannot be populated by either a conventional direct or semidirect process. Evidence is presented showing that this state could be populated via a multistep excitation in the entrance channel.