Production and Assignment of a New Transuranium Neutron-Deficient Isotope <sup>235</sup>Am

Chin. Phys. Lett.

1997, Vol. 14

Issue (4): 270-272 DOI:

Original Articles

Production and Assignment of a New Transuranium Neutron-Deficient Isotope ²³⁵Am

SHI Li-jun;GUO Jun-sheng;LIU Hong-ye;GAN Zai-guo;YANG Wei-fan;MOU Wan-tong;GUO Tian-rui;SHEN Shui-fa;FANG Ke-ming;YUAN Shuang-gui;QIN Zhi;ZHANG Xue-qian;MA Rui-chang;ZHONG Ji-quan,WANG Shu-hong¹;KONG Deng-ming¹;QIAO Ji-min¹

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 ¹Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039

Cite this article:

SHI Li-jun, GUO Jun-sheng, LIU Hong-ye et al 1997 Chin. Phys. Lett. 14 270-272

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Abstract A new transuranium neutron-deficient isotope ²³⁵Am was produced via the reaction of ²³⁸Pu ( p , 4n) ²³⁵Am by using a 35 MeV proton beam. The recoiled products were collected by a helium-jet and long-capillary system. Americium isotopes were separated out by a rapid radiochemical method. X-ray, γ-ray, and x-γ coincidence measurements were taken in the study. According to ²³⁵Pu decay γ-ray and Np K x-ray growth-decay property, ²³⁵Am was definitely identified and its half life is determined as 15 ± 5 min.

Keywords: 27.90.+b 23.40.-s

Published: 01 April 1997

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

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1997/V14/I4/0270

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	SHI Li-jun
	GUO Jun-sheng
	LIU Hong-ye
	GAN Zai-guo
	YANG Wei-fan
	MOU Wan-tong
	GUO Tian-rui
	SHEN Shui-fa
	FANG Ke-ming
	YUAN Shuang-gui
	QIN Zhi
	ZHANG Xue-qian
	MA Rui-chang
	ZHONG Ji-quan
	WANG Shu-hong
	KONG Deng-ming
	QIAO Ji-min

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