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The high-spin structure of $^{109}\mathrm{In}$ has been investigated with the $^{100}\mathrm{Mo}(^{14}\mathrm{N}$, $5n)^{109}\mathrm{In}$ reaction at a beam energy of 78 MeV using the in-beam $\ensuremath{\gamma}$ spectroscopic method. The level scheme of $^{109}\mathrm{In}$ has been modified considerably and extended by 46 new $\ensuremath{\gamma}$ rays to the highest excited state at 8.980 MeV and ${J}^{\ensuremath{\pi}}=(45/{2}^{+})$. The new level scheme consists of eight bands, six of which are identified as dipole bands. The configurations have been tentatively assigned with the help of the systematics of neighboring odd-$A$ indium isotopes and the experimental aligned angular momenta. The dipole bands are then compared with the titled axis cranking calculation in the framework of covariant density function theory. The results of theoretical calculations based on the configurations, which involve one proton hole at the ${g}_{9/2}$ orbital and two or four unpaired neutrons at the ${g}_{7/2}$, ${d}_{5/2}$, and ${h}_{11/2}$ orbitals, show that the shape of $^{109}\mathrm{In}$ undergoes an evolution on both $\ensuremath{\beta}$ and $\ensuremath{\gamma}$ deformations, and possible chirality is suggested in $^{109}\mathrm{In}$.

The measurement of one-neutron stripping cross sections for the $^{89}\mathrm{Y}(^{6}\mathrm{Li},^{5}\mathrm{Li})^{90}\mathrm{Y}^{*}$ reaction at 22 MeV and 34 MeV is reported, using both in-beam and off-beam $\ensuremath{\gamma}$-ray spectroscopy methods. Characteristic $\ensuremath{\gamma}$ lines of $^{90}\mathrm{Y}$ are clearly identified by both the $\ensuremath{\gamma}\text{\ensuremath{-}}\ensuremath{\gamma}$ and proton-$\ensuremath{\gamma}$ coincidence methods. The obtained cross section of one-neutron stripping at 34 MeV is found to be much smaller than that at 22 MeV. The one-neutron stripping cross sections measured for this system have the same order of magnitude as the one measured for the same reaction for the $^{6}\mathrm{Li}+^{96}\mathrm{Zr}$ system at energies around the Coulomb barrier. Parameter-free coupled reaction channel calculations agree quite well with the experimental data. Theoretical study of the effect of the one-neutron transfer on the elastic total fusion cross section is performed.

Measurements of complete and incomplete fusion cross sections for $^{6}\mathrm{Li}+^{154}\mathrm{Sm}$ have been performed at energies above the Coulomb barrier by the online $\ensuremath{\gamma}$-ray method, to investigate the effect of breakup and inelastic couplings on the complete fusion (CF) of this weakly bound system. We show that inelastic excitation couplings have non-negligible effects, when compared with the breakup effect, for deformed nuclei at energies very close to the Coulomb barrier. The average CF suppression corresponding to dynamic breakup effects was found to be around 35%. The total fusion cross section is not affected by the breakup coupling. A comparison between the $^{6}\mathrm{Li}$-induced CF suppression for three different samarium isotopes shows that the breakup effect is larger for the more spherical isotope.

The measurements of complete fusion cross sections for $^{6}\mathrm{Li}+^{96}\mathrm{Zr}$ have been performed at energies around the Coulomb barrier by the online $\ensuremath{\gamma}$-ray method. The complete fusion cross sections at above-barrier energies were found to be suppressed by $\ensuremath{\sim}25%$. A comparison of the systematics of complete fusion suppression with the existing data for $^{6}\mathrm{Li}$+ heavy targets with the present results shows that the systematics of the suppression factor observed for $^{6}\mathrm{Li}$-induced fusion in the heavy mass region may not be consistent in lighter target mass region.

Coulomb barrier heights provided by different nuclear interaction models including the Bass model, the proximity potential model, and the double folding model have been applied for experimental data of fusion in terms of a recently proposed energy scaling approach. The results show that the proximity potential description of the barrier heights seems to be closest to the values required by the systematics. It is suggested that the proximity potential model is the most suitable model to calculate the barrier height. However, the double folding model gives the lowest barrier heights.