Levels in Si28 via the Mg26(He3,n) reaction

R. N. Boyd, University of Rochester
D. Elmore, University of Rochester
W. P. Alford, The University of Western Ontario
J. P. Draayer, Louisiana State University
R. A. Lindgren, Naval Research Laboratory


The Mg26(He3,n)Si28 reaction at EHe3=15 MeV has been studied. Relative strengths to excited states in Si28 are determined from a distorted-wave Born-approximation analysis of the data. The ratios S(0+→Jπ) S(0+→0+) for the lowest Jπ=2+,4+ states compare favorably with predictions based on pure SU3 symmetry. When compared with results from the Mg24(Li6,d)Si28 a consistent picture for the structure of the 0.0 (0+), 1.78 (2+), 4.62 (4+), 4.98 (0+), and 6.69 (0+) MeV levels in Si28 is suggested. NUCLEAR REACTIONS Mg26(He3,n) E=15 MeV; measured σ(θ), θlab=0°-55°; extracted strength with DWBA, compared with SU3 predictions. © 1976 The American Physical Society.