High-spin states in ${}^{122}\mathrm{Cs}$ have been studied via ${}^{107}\mathrm{Ag}$(${}^{19}\mathrm{F}$, p3n)${}^{122}\mathrm{Cs}$ fusion evaporation reaction at beam energy of 93 MeV. Fifteen new transitions belonging to ${}^{122}\mathrm{Cs}$ have been observed and placed in the level scheme. The level structure of ${}^{122}\mathrm{Cs}$ has been extended up to $E_x\approx 7$ MeV and $J\approx 28\hslash$. We have performed the linear polarization measurements using the Clover detectors to assign the unknown spins and parities of a few bands. We have also observed a few linking transitions between negative and positive parity bands indicating the octupole collectivity in this nucleus. The structure of the various bands are discussed in the frame work of the cranked Hartree-Fock-Bogoliubov model and the microscopic projected Hartree-Fock model calculations.

• Received 20 May 2005

DOI:https://doi.org/10.1103/PhysRevC.72.044319