Structure of the11/2−isomeric state inLa133

• DOI: 10.1103/physrevc.101.034315
• Publication Date: 2020-03-31T16:54:53Z
• Authors: Md. S. R. Laskar; R. Palit; S. N. Mishra; N. Shimizu; Y. Utsuno; E. Ideguchi; U. Garg; S. Biswas; F. S. Babra; R. Gala; C. S. Palshetkar; Z. Naik
• Keywords: 0103 physical sciences; 01 natural sciences

We report measurement of the $g$-factor for ${11/2}^{\ensuremath{-}}$ isomeric state at 535 keV in $^{133}\mathrm{La}$, employing time differential perturbed angular distribution technique (TDPAD). This isomer was populated reaction $^{126}\mathrm{Te}(^{11}\mathrm{B}$, $4n)^{133}\mathrm{La}$ beam energy 52 MeV. From observed nuclear spin precession, analysed through combined, magnetic dipole and electric quadrupole hyperfine interactions, we obtain $g$ factor $11/{2}^{\ensuremath{-}}$ as $g=1.16\ifmmode\pm\else\textpm\fi{}0.07$. In addition, this analysis provides spectroscopic moment $|Q|=1.71\ifmmode\pm\else\textpm\fi{}0.34\phantom{\rule{3.33333pt}{0ex}}b$, yielding deformation parameter $\ensuremath{\beta}=0.28\ifmmode\pm\else\textpm\fi{}0.10$. Further, have performed theoretical calculations using large-scale shell model Monte Carlo model. The results successfully describe low-lying levels band structures calculated compares well with values obtained from our experiment. dominant configuration $^{133}\mathrm{La}$ is inferred to be $\ensuremath{\pi}({h}_{11/2})\ensuremath{\bigotimes}^{132}\mathrm{Ba}({0}^{+})$.