Isospin-mixed states in 8Be

Abstract The isospin mixing of states in 8 Be near 17 MeV was investigated by comparison of cross sections for the 9 Be(d, t) 8 Be and 9 Be(d, 3 He) 8 Li reactions. For the 2 + doublet at 17 MeV, our results are inconsistent with previous measurements of the isospin mixing unless the theoretical T = 0, p 3 2 spectroscopic amplitude is changed by ≈ 20%. For the 1 + states near 18 MeV we find an isospin amplitude impurity of 0.21±0.03. For the 3 + states near 19 MeV no new information could be obtained due to the complex peak shape.