Angular distribution of $\\gamma $ rays emitted by oriented nuclei: the case of $^{92}$Mo formed in the reaction $^6$Li+$^{89}$Y

Gamma-ray angular distributions in oriented $$^{92}$$\n Mo produced via the $$^{6}$$\n Li+\n $$^{89}$$\n Y reaction were studied in this work. The characteristic $$\\gamma $$\n rays in $$^{92}$$\n Mo were measured by means of the GALILEO array, which is composed of 25 Compton-suppressed HPGe detectors arranged in a nearly 2\n $$\\pi $$\n geometry. A detailed analysis of the spin-alignment attenuation factors (\n $$\\alpha _2$$\n ) for different excited states in $$^{92}$$\n Mo was performed, by analyzing the measured angular distribution coefficients of several pure-E2 transitions. The relationship between $$\\alpha _2$$\n and the spin was established in $$^{92}$$\n Mo and the 244-keV transition between the 5\n $$^-_1$$\n and 4\n $$^+_1$$\n states resulted to have a E1 + M2 character with a mixing ratio (\n $$\\delta $$\n ) of $$-0.05^{+0.05}_{-0.06}$$\n , consistent with shell model calculations.