Gamma Decay of the Lowly Excited States of <sup>229</sup>AC

Chin. Phys. Lett.

1997, Vol. 14

Issue (4): 263-265 DOI:

Original Articles

Gamma Decay of the Lowly Excited States of ²²⁹AC

YUAN Shuang-gui;YANG Wei-fan;SHEN Shui-fa;FANG Ke-ming;MOU Wan-tong;ZHANG Xue-qian;LI Zong-wei

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000

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YUAN Shuang-gui, YANG Wei-fan, SHEN Shui-fa et al 1997 Chin. Phys. Lett. 14 263-265

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Abstract By bombarding the natural thorium targets with 14 MeVneutrons, ²²⁹Ra was produced through the reaction ²³²Th(n,α) ²²⁹Ra. The radium activities were separated from the irradiated targets by coprecipitation with BaC1₂. A total of 18 weak γ rays with energies of 14.5, 15.6, 18.8, 21.8, 22.5, 44.0, 47.5, 55.0, 63.0, 69.6, 93.6, 94.1, 98.5, 102.2, 104.5, 106.1, 161.1, and 171.5keV, which could be assigned to the decay of ²²⁹Ra, has been observed in the isolated radium fractions employing high-resolution HPGe detectors and γ (x)- γ coincidence methods. A decay scheme of ²²⁹Ra based on these observations has been proposed.

Keywords: 23.40.-s 27.90.+b

Published: 01 April 1997

PACS:	23.40.-s	(β-decay;double β-decay; electron and muon capture)
	27.90.+b	(A ≥ 220)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1997/V14/I4/0263

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	YUAN Shuang-gui
	YANG Wei-fan
	SHEN Shui-fa
	FANG Ke-ming
	MOU Wan-tong
	ZHANG Xue-qian
	LI Zong-wei

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