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Gamma-ray angular distributions in oriented 92 Mo produced via the 6 Li+ 89 Y reaction were studied in this work. The characteristic γ rays in 92 Mo were measured by means of the GALILEO array, which is composed of 25 Compton-suppressed HPGe detectors arranged in a nearly 2 π geometry. A detailed analysis of the spin-alignment attenuation factors ( α 2 ) for different excited states in 92 Mo was performed, by analyzing the measured angular distribution coefficients of several pure-E2 transitions. The relationship between α 2 and the spin was established in 92 Mo and the 244-keV transition between the 5 1 - and 4 1 + states resulted to have a E1 + M2 character with a mixing ratio (δ ) of - 0. 05 - 0.06 + 0.05 , consistent with shell model calculations. [ABSTRACT FROM AUTHOR]

Several zirconium isotopes are in the path of slow neutron capture (s) process, and the direct components of (n,γ) reactions can be derived from their neutron spectroscopic factors. In the present work, the angular distributions of (12C,13C) and (13C,12C) reactions on targets 90,92,94,96Zr were obtained using the high-precision Q3D magnetic spectrograph at the Beijing HI-13 tandem accelerator in China Institute of Atomic Energy. The distorted-wave Born approximation calculations were performed to extract the spectroscopic factors, using three different sets of Woods-Saxon potential parameters for these heavy-ion systems. The neutron spectroscopic factors for the ground state of 90-97Zr have been obtained and compared with other experimental data. [ABSTRACT FROM AUTHOR]

The angular distributions of the 12C(11B,11B)12C and 12C(11B,12C)11B reactions have been measured at an incident energy of 50 MeV by using the high resolution Q3D magnetic spectrometer of the HI-13 tandem accelerator at China Institute of Atomic Energy, Beijing. The optical potential parameters of the 11B + 12C system are determined by fitting the angular distribution of the elastic scattering and then used to predict the cross sections of the elastic transfer reaction leading to the ground state in l 2C based on distorted-wave Born approximation (DWBA) analysis. Taking into account the interference between the elastic scattering and the elastic transfer processes, the proton spectroscopic factor of the, 12C ground state is extracted to be 2.15 ± 0.23 by constraining the geometrical parameters r0 and a using the rms radius of the valence proton in the 12C ground state. [ABSTRACT FROM AUTHOR]