Gamma-ray angular distribution analysis of transfer reaction data for excited states of ²⁶Na

The radioactive beam of ²⁵Na at 5 MeV/u with an intensity up to 3 × 10⁷ pps was employed to investigate γ-ray angular distributions in tandem with particle detection of interest in nuclear reaction of d (²⁵Na, p γ). Inverse kinematics calculations were used to retrieve the excited state energies. Silicon Highly Segmented Array for Reactions and Coulex (SHARC) detector and TRIUMF ISAC Gamma-Ray Escape-Suppressed Spectrometer (TIGRESS) were used together to search for any correlation between scattered particles and gamma-rays. Nine specific transitions were investigated for their characteristic gamma-ray angular distributions in this distinctive study. Theoretical results of gamma-ray angular distributions (W_θp(θ_γ)) were compared with experimental data. This type of study was crucial for future experiments with a radioactive beam and low gamma-ray statistics to foresee the possible effects and results of particle-γ correlations.