Angular correlation measurement in the B11(d,pγ)B12 reaction

Thep-γ angular correlations in B¹¹(d, p)B¹² reaction have been measured in both reaction and azimuthal planes for proton angles 35° at E_D=1.60 and 2.40 MeV. The correlation coefficient A ₂ ⁰ and the distortion parameterλ were calculated. The obtained values of the shift of the symmetry axis from the recoil direction, Φ₀ and the parameterλ are far from there plane wave limits. The anisotropy of the angular correlation gives two possible values, 1⁺ and 2⁺, for the spin of the first excited state of B¹².