Structure study of 11B from the scattering of neutrons from 10B

Abstract

Differential cross sections for neutrons scattered from 10B have been measured for 1.5 MeV < E n < 4.4 MeV. These results and elastic scattering and polarization data at lower energies together with data from the reactions 10B( n, α 0) 7 Li and 10 B( n, α 1 7 Li (0.48 MeV) have been simultaneously fitted using a two-level, four-channel R-matrix formalism with a non-diagonal background R° matrix. The level parameters obtained from the R-matrix fitting of these data for states in 11B with excitation energies 11.5 MeV < E x < 15.5 MeV are consistent with other reactions such as 10B(n, n′γ) 10B (0.717), 7Li(α, n 0) 10B and 7Li(α, n 1) 10B (0.717) which lead to states in 11B.