Signature splitting in two quasiparticle rotational bands of $^{180,182}$Ta

Pramana

SINGH SUKHJEET²  KALRA KAWALPREET¹  GOEL A1²  SHARMA J K²  KUMAR SUSHIL1² 

[1] Amity Institute of Nuclear Science and Technology, Amity University, Noida 201 303, India$$;Maharishi Markandeshwar University Mullana, Ambala 133 207, India$$

关键词: Multifragmentation;    canonical thermodynamical model;    projectile fragmentation.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

The signature splittings in $K^{pi} =1^{+}: 7/2[404]_{pi}igotimes 9/2[624]_{u}$ , $K^{pi} =0^{−}: 9/2[514]_{pi}igotimes 9/2[624]_{u}$ bands of $^{180}$Ta and $K^{pi} = 0^{−}: 7/2[404]_{pi}igotimes 7/2[503]_{u}$ , $K_{pi} = 1^{−}: 5/2[402]_{pi}igotimes 3/2[512]_{u$ , $K^{pi} = 1^{+}: 7/2[404]_{pi}igotimes9/2[624]_{u}$ bands of $^{182}$Ta are analysed within the framework of two-quasiparticle rotor model. The phase as well as magnitudeof the experimentally observed signature splitting in $K^{pi} = 1^{+}$ band of $^{180}$Ta, which could not be explained in earlier calculations, is successfully reproduced. The conflict regarding placement of a 12$^+$ level in $K^{pi} = 1^{+}: 7/2+[404]_{pi}igotimes 9/2+[624]_{u}$ ground-state rotational band of $^{180}$Ta is resolved and tentative nature of $K^{pi} = 0^{−}:7/2[404]_{pi}igotimes7/2[503]_{u}$ ,$K^{pi} = 1^{+}: 7/2[404]_{pi}igotimes 9/2[624]_{u}$ bands observed in $^{182}$Ta is confirmed. As a future prediction for experimentalists, these two-quasiparticle structures observed in $^{180}$Ta and $^{182}$Ta are extended to higherspins.

【 授权许可】

Unknown