Structure of the Semi-decoupled π 1/2[411] Band in Odd Proton Nucleus <sup>169</sup>Ta

Chin. Phys. Lett.

2003, Vol. 20

Issue (3): 346-349 DOI:

Original Articles

Structure of the Semi-decoupled π 1/2[411] Band in Odd Proton Nucleus ¹⁶⁹Ta

SONG Hai^1,5;YANG Chun-Xiang^1,2,4;SUN Hui-Bin³;DENG Fu-Guo^1,5;WU Xiao-Guang²;LU Jing-Bin⁴;ZHAO Guang-Yi⁴;HAN Guang-Bing²;PENG Chao-Hua²;YIN Li-Chang⁴;WEN Shu-Xian²;LI Guang-Sheng²;YUAN Guan-Jun²;LIU Yun-Zuo⁴;ZHU Li-Hua²;SHAO Li-Qin^1,5;ZHOU Hong-Yu^1,5

¹The Key Laboratory of Beam Technology and Materials Modification of Ministry of Education, Beijing Normal University, Beijing 100875 ²China Institute of Atomic Energy, Beijing 102413 ³Institute of Nuclear Technique, Shenzhen University, Shenzhen 518060 ⁴Department of Physics, Jilin University, Changchun 130023 ⁵Beijing Radiation Center, Beijing 100875

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SONG Hai, YANG Chun-Xiang, SUN Hui-Bin et al 2003 Chin. Phys. Lett. 20 346-349

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Abstract High spin states of the odd proton-nucleus ¹⁶⁹Ta have been populated in the reaction ¹⁵⁵Gd(¹⁹F, 5n) with beam energies of 97 MeV. Rotational band based on d_3/2 proton 1/2[411] Nilsson state has been pushed up to 39/2⁺ in the α = 1/2 decay sequence. Its signature partner, the α = -1/2 decay sequence with four link transitions has been established and 1/2[411] band in ¹⁶⁹Ta was reassigned to be a semi-decoupled band. The systematics of the signature splitting in the K = 1/2 bands in the rear-earth region and the accidental degeneracy conclusion given by the angular projection shell model were discussed.

Keywords: 21.10.-k 23.20.Lv 21.60.Cs 27.70.+q

Published: 01 March 2003

PACS:	21.10.-k	(Properties of nuclei; nuclear energy levels)
	23.20.Lv	(γ-transitions and level energies)
	21.60.Cs	(Shell model)
	27.70.+q	(150 ≤ A ≤ 189)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2003/V20/I3/0346

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	SONG Hai
	YANG Chun-Xiang
	SUN Hui-Bin
	DENG Fu-Guo
	WU Xiao-Guang
	LU Jing-Bin
	ZHAO Guang-Yi
	HAN Guang-Bing
	PENG Chao-Hua
	YIN Li-Chang
	WEN Shu-Xian
	LI Guang-Sheng
	YUAN Guan-Jun
	LIU Yun-Zuo
	ZHU Li-Hua
	SHAO Li-Qin
	ZHOU Hong-Yu

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