Abstract
High spin states of ${}^{34}\text{Cl}$ populated through ${}^{27}\text{Al}$(${}^{12}\text{C}$,$\ensuremath{\alpha}n$)${}^{34}\text{Cl}$ reaction at $E{(}^{12}\text{C})=40$ MeV, have been studied using the Indian National Gamma Array facility. The level scheme has been extended up to 10.6 MeV utilizing the results of intensity, directional correlation, and linear polarization measurements. Lifetimes of a few excited states have been estimated for the first time using the Doppler shift attenuation method. Large-basis shell-model calculations within the $sd\text{\ensuremath{-}}pf$ space have been done to understand the microscopic origin of the excited states. Involvement of $pf$ orbitals have been found to be essential to reproduce the negative-parity as well as high spin positive-parity states. Onset of collectivity manifested through short half-lives and large $B(E2)$ values have been reproduced well in the calculations.
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