Evidence of transverse wobbling motion in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Eu</mml:mi><mml:mprescripts/><mml:none/><mml:mn>151</mml:mn></mml:mmultiscripts></mml:math>
A. Mukherjee, S. Bhattacharya, T. Trivedi, Shivani Tiwari, R. P. Singh, S. Muralithar, Yashraj Yashraj, K. Katre, Rajesh Kumar, R. Palit, S. Chakraborty, S. Jehangir, Nazira Nazir, S. P. Rouoof, G. H. Bhat, J. A. Sheikh, N. Rather, R. Raut, S. S. Ghugre, Sajad Ali, S. Rajbanshi, Somnath Nag, S. S. Tiwary, Anupriya Sharma, Suresh Kumar, Sanjeev Yadav, Ashok Jain
Abstract
Transverse wobbling was investigated in the $^{151}\mathrm{Eu}$ nucleus by populating the excited states using $^{148}\mathrm{Nd}(^{7}\mathrm{Li}$, $4\mathrm{n})^{151}\mathrm{Eu}$ at a beam energy of 30 MeV. Three new interconnecting transitions have been placed between the two negative parity bands. The M1/E2 character of the interconnecting $\mathrm{\ensuremath{\Delta}}I=1$ transitions between the negative parity bands was extracted from the mixing ratios using the ${R}_{\mathrm{DCO}}$ and linear polarization method. The spin and parity of the states of different bands have also been assigned. The dominant E2 character of the interlinking transitions between the yrast and first phonon wobbling band and the dominant M1 character between the yrast band and its signature partner band indicate the presence of transverse wobbling in the $^{151}\mathrm{Eu}$ nucleus. It is further demonstrated that the triaxial projected shell model approach describes the observed experimental properties.