Systematic of signature inversion in $(h_{11/2})_{ext{p}}⊗ (i_{13/2})_{ext{n}}$ for odd–odd nuclei in rare-earth nuclei

Pramana

Sukhjeet Singh¹  Kawalpreet Kalra1⁴  A K Jain³  Sushil Kumar¹  Alpana Goel² 

[1] Department of Physics, Maharishi Markandeshwar University, Mullana 133 207, India$$;Amity Institute of Nuclear Science and Technology, Amity University, Noida 201 303, India$$;Department of Physics, Indian Institute of Technology, Roorkee 247 667, India$$;Department of Physics, Amity Institute of Applied Sciences, Amity University, Noida 201 303, India$$

关键词: Signature inversion;    odd–even staggering;    Coriolis coupling;    particle–particle coupling.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Systematic features of the signature inversion phenomenon in $(h_{11/2})_{ext{p}}⊗ (i_{13/2})_{ext{n}}$ in doubly-odd rare-earth nuclei are presented. These features are generally observed in high-𝑗 orbitals, mainly, in $(h_{9/2})$, $(h_{11/2})$ and $(i_{13/2})$. Calculations are carried out within the framework of the two quasiparticle plus rotor model (TQPRM) to explain strong odd–even staggering and signature inversion observed in these high-𝑗 orbitals. The shifting of point of inversion to lower/higher spin with the increase in neutron/proton numbers is well explained by the calculations. It is found that 1/2[541] proton orbital of $h_{9/2}$ is necessary in the lower mass region to obtain the point of inversion.

【 授权许可】

Unknown