Abstract
High spin levels in $^{108}\mathrm{Cd}$ have been populated through $^{100}\mathrm{Mo}(^{13}\mathrm{C},5n\ensuremath{\gamma})^{108}\mathrm{Cd}$ reaction using a 65 MeV $^{13}\mathrm{C}$ beam. The lifetime of the ${14}^{+},{16}^{+},{18}^{+}$, and ${20}^{+}$ levels of the positive parity yrast band of $^{108}\mathrm{Cd}$ have been measured using the Doppler shift attenuation method. The evaluated B(E2) values from the measured lifetimes have been compared with the B(E2) values calculated using the semiclassical model, which assume shears mechanism, and the values obtained from total Routhian surface (TRS) calculations. Both calculations show good agreement with the measured values. In addition, the large ${\mathcal{J}}^{(2)}/B(E2)$ ratio may indicate that a large contribution to the angular momentum of this band is generated by shears mechanism. Thus, the present work indicates that the states of the positive parity yrast band from ${16}^{+}$ onwards in $^{108}\mathrm{Cd}$, originate due to antimagnetic rotation.
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