A New Heavy Neutron-rich Isotope <SUP>238</SUP>Th

Xu Yanbing; Yuan Shuanggui; Yang Weifan; He Jianjun; Li Zongwei; Ma Taotao; Xiong Bing; Qin Zhi; Mou Wantong; Gan Zaiguo; Shi Lijun; Guo Tianrui; Chen Zhantu; Guo Junsheng

Chinese Physics C> 1999, Vol. 23> Issue(1) : 93-95

A New Heavy Neutron-rich Isotope ²³⁸Th

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

Abstract
HTML
Reference
Related

PDF

Abstract：
A new nuclide ²³⁸Th has been produced via multinucleon transfer reaction induced by 60MeV/u ¹⁸O ion irradiation of natural uranium. The thorium was radiochemically separated from the mixture of uranium and its reaction products. The activity of thorium was measured by using a HPGe detector and a planar HPGe detector. The ²³⁸Th has been identified for the first time by measuring the growth and decay of the γ-rays from its daughter ²³⁸Pa. The half-life of 238Th was determined to be (9.4±2.0)min. In addition,a new (89.0±0.3)keV γ-ray with T_1/2=(8.9±1.5)min was observed and assigned to ²³⁸Th decay based on the measurement of transition energy and half life.

References

[1]

Yuan Shuanggui et al. Z Phys, 1993, A346: 187—188 2 Yuan Shuanggui et al.High Energy Physics and Nuclear Physics(in Chinese),1993,17:959—960(袁双贵等.高能物理与核物理,1993,17:959–960) 3 Zhang Li et al. Phys. Rev, 1994, C49:592–593 4 Zhang Li et al. High Energy Physics and Nuclear Physics(in Chinese),1992, 16:767—768(张立等.高能物理与核物理,1992,16:767—768) 5 Yuan Shuanggui et al. Z Phys, 1995, A352:235–2366 Yang Weifan et al. High Energy Physics and Nuclear Physics(in Chinese), 1995, 19:479–480(杨维凡等.高能物理与核物理,1995,19:479–480)7 Yuan Shuanggui et al. Phys. Rev、 1998, C57:1506– 1507 8 Yang Weifan et al.High Energy Physics and Nuclear Physics(in Chinese), 1997, 21:958–959(杨维凡等.高能物理与核物理,1997,21:958—959) 9 Staudt A Bender B, klapolor–kleingronthaus H V At Data Nucl. Data Tables,1990, 44:7910 Firestone Richard B. Table of Isotopes,1996, 2:2780

[1]	HE Guo-Zhu , TUO Fei , KONG Xiang-Zhong . (n,2n),(n,p) and (n,α) Reactions Cross-Sections Measurement on Selenium Isotopes at Neutron Energy of 14MeV. Chinese Physics C, 2006, 30(9): 844-847.
[2]	DING Bin-Gang , ZHANG Da-Li , LU Ding-Hui . A new method to prove the closed shell of N=184 for the neutron-rich superheavy elements. Chinese Physics C, 2006, 30(4): 310-313.
[3]	FAN Hong-Mei , WU Xiao-Lei , GUO Jun-Shen , GAN Zai-Guo , QIN Zhi , LEI Xiang-Guo , DONG Cheng-Fu , XU Hua-Gen , CHEN Ruo-Fu , ZHANG Fu-Ming , GUO Bin , LIU Hong-Ye , WANG Hua-Lei , , , . Identification of the New Isotope 265107Bh by α Correlated Decay Chains. Chinese Physics C, 2005, 29(5): 451-455.
[4]	FAN Hong-Mei , GAN Zai-Guo , QIN Zhi , LEI Xiang-Guo , XU Yan-Bing , HE Jian-Jun , LIU Hong-Ye , WU Xiao-Lei , GUO Jun-Sheng , ZHOU Xiao-Hong , YUAN Shuang-Gui , JIN Gen-Ming . A New Isotope of Z=105 with Mass Number 259. Chinese Physics C, 2001, 25(6): 602-606.
[5]	He Jianjun , Yang Weifan , Yuan Shuanggui , Ma Taotao , Li Zongwei , Xiong Bing , Xu Yanbing . Identification of New Isotope ²³⁸Th. Chinese Physics C, 1999, 23(11): 1044-1048.
[6]	Zhao Jinhua , Zhang Li , Zheng Jiwen , Wang Jicheng , Qin Zhi , Yang Yongfeng , Zhang Chun , Jin Genming , Guo Guanghui , Du Yifei , Guo Tianrui , Wang Tongqing , Guo Bin , Tan Jinfeng . New Heavy Neutron-Rich Nuclide ²⁰⁹Hg. Chinese Physics C, 1998, 22(10): 959-960.
[7]	He Jianjun , Yuan Shuanggui , Yang Weifan , Li Zongwei , Ma Taotao , Fang Keging , Shen Shuifa , Gan Zaiguo , Pan Qiangyan , Chen Zhantu , Guo Tianrui , Mou Wantong , Su Denggui , Xu Yanbing , Guo Junsheng , Liu Hongye , Shi Li Lijun , Zhao Zhizheng , Ma Huifang . A New Isotope of Hafnium: ¹⁸⁶Hf. Chinese Physics C, 1998, 22(12): 1057-1060.
[8]	Yang Weifan , Yuan Shuanggui , Li Zongwei , He Jianjun , Ma Taotao , Fang Keming , Shen Shuifa , Gan Zaiguo , Pan Qiangyan , Mou Wantong , Su Denggui , Chen Zhantu , Guo Tianrui , Guo Junsheng , Liu Hongye , Shi Lijun , Zhao Zhizheng , Ma Huifang . A New Neu tron-rich Isotope:¹⁸⁶Hf. Chinese Physics C, 1997, 21(10): 958-959.
[9]	Zhang Li , Wang Jicheng , Zhao Jinhua , Yang Yongfeng , Zheng Jiwen , Qin Zhi , Zhang Chun , Guo Tianrui . Detection of Weak γ-Activities of Neutron-Rich Isotopesin Element-Separated Sample. Chinese Physics C, 1997, 21(10): 891-896.
[10]	Guo Junsheng , Gan Zaiguo , Liu Hongye , Shi Lijun , Yang Weifan , Mou Wantong , Guo Tianrui , Fang Keming , Shen Shuifa , Yuan Shuanggui , Zhong Jiquan , Zhang Xueqian , Qin Zhi , Ma Ruichang , Wang Shuhong , Kong Dengming , Qiao Jimin . Synthesis and Identification of the New Transuranium Neutron-deficient Isotope ²³⁵Am. Chinese Physics C, 1996, 20(3): 286-288.
[11]	Wang Jicheng , Zhang Li , Guo Guanghui , Zhao Jinhua , Zheng Jiwen . Cross Section Measurements of Neutron-Rich Hg Isotopes in Reaction of 28MeV/u ¹⁸O with Thick Natural Lead Target. Chinese Physics C, 1995, 19(8): 686-691.
[12]	Yang Weifan , Yuan Shuanggui , Zhang Xueqian , Yu Xian , Mou Wantong , Li Zongwei , Gan Zaiguo , Liu Hongye , Guo Junsheng , Zhong Jiquan , Sun Xiangfu . The Synthesis and γ Decay of New Heavy Neutron-Rich Nuclide ¹⁷⁵Er. Chinese Physics C, 1995, 19(10): 959-960.
[13]	Yang Weifan , Yuan Shuanggui , Mou Wantong , Zhang Xueqian , Li Zongwei , Yu Xian , Gan Zaiguo , Liu Hongye , Guo Yingxiang , Zhao Jinhua , Lei Xiangguo , Guo Junsheng , Du Yifei , Zhao Lili , Zhang Xiang . A New Heavy Neutron-Rich Isotope ²³⁹Pa. Chinese Physics C, 1995, 19(5): 479-480.
[14]	YUAN Shuang-Gui , ZHANG Tian-Mei , XU Shu-Wei , LI Zong-Wei , PAN Qiang-Yan , ZHAO Zhi-Zheng , YANG Wei-Fan , ZHANG Xue-Qian , LI Wei-Sheng , YIN Xi-Jin , DU Yi-Fei , WANG Yi-Hao . The Synthesis and Identification of New Neutron-Rich Heavy Nuclide ²³⁷Th. Chinese Physics C, 1993, 17(10): 959-960.
[15]	YANG Weifan , ZHAO Zhizheng , LI Zongwei , MOU Wantong , ZHU Shaofei , XIE Xiujun , YUAN Suanggui , ZHANG Tianmei , PAN Qiangyan , WANG Jicheng , XU Shuwei . New Gamma Rays from the Neutron-Rich Isotope ¹⁸⁹W Decay. Chinese Physics C, 1993, 17(11): 1055-1056.
[16]	XU Hu-Shan , JIANG Cheng-Lie , BAI Xi-Xiang . Preliminary Observation of Proton-rich Isotope ⁶⁵As. Chinese Physics C, 1992, 16(7): 647-650.
[17]	ZHANG Li , JIN Gen-Ming , ZHAO Jin-Hua , YANG Wei-Fan , YANG Yong-Feng , ZHAO Zhi-Zheng , ZHENG Ji-Wen , SUN Xiu-Rong , LI Zong-Wei , QIN Zhi , WANG Ji-Cheng , GUO Guang-Hui . New Neutron-Rich Isotope ²⁰⁸Hg. Chinese Physics C, 1992, 16(8): 767-768.
[18]	FENG Jun , SHEN Wen-Qing , ZENG Yue-Wu , WANG Bing , MA Yu-Gang , ZHAN Wen-Long , ZHU Yong-Tai , FENG En-Pu . The Relation of Isotopic Distribution of Heavy Ion Peripheral Reaction Products to Neutron-Skin and Excitation Energy in Intermediate Energy Range. Chinese Physics C, 1991, 15(4): 322-328.
[19]	ZHANG Jing-Ye , ZHONG Ji-Quan , JIAO Dun-Pang , GE Yuan-Xiu , MA Xi-Liang . ON THE νi_13/2PAIR IN EVEN Pt ISOTOPES. Chinese Physics C, 1987, 11(1): 128-132.
[20]	SHEN WEN-QING . NEUTRON RICH ISOTOPES ⁵⁴Ti, ⁵⁶V, ⁵⁷V, ⁵⁸Cr PRODUCED IN BOMBARDMENT OF ⁵⁶Fe TARGET WITH 79OMeV ¹³⁶Xe IONS. Chinese Physics C, 1982, 6(4): 462-465.

Access

Get Citation

Xu Yanbing, Yuan Shuanggui, Yang Weifan, He Jianjun, Li Zongwei, Ma Taotao, Xiong Bing, Qin Zhi, Mou Wantong, Gan Zaiguo, Shi Lijun, Guo Tianrui, Chen Zhantu and Guo Junsheng. A New Heavy Neutron-rich Isotope ²³⁸Th[J]. Chinese Physics C, 1999, 23(1): 93-95.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1998-08-26
Revised: 1900-01-01

Article Metric

Article Views(3029)
PDF Downloads(661)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

A New Heavy Neutron-rich Isotope ²³⁸Th

Corresponding author: Xu Yanbing,

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

Received Date: 1998-08-26

Accepted Date: 1900-01-01

Available Online: 1999-01-05

Abstract: A new nuclide ²³⁸Th has been produced via multinucleon transfer reaction induced by 60MeV/u ¹⁸O ion irradiation of natural uranium. The thorium was radiochemically separated from the mixture of uranium and its reaction products. The activity of thorium was measured by using a HPGe detector and a planar HPGe detector. The ²³⁸Th has been identified for the first time by measuring the growth and decay of the γ-rays from its daughter ²³⁸Pa. The half-life of 238Th was determined to be (9.4±2.0)min. In addition,a new (89.0±0.3)keV γ-ray with T_1/2=(8.9±1.5)min was observed and assigned to ²³⁸Th decay based on the measurement of transition energy and half life.

HTML

Reference (1)

A New Heavy Neutron-rich Isotope ²³⁸Th

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

A New Heavy Neutron-rich Isotope ²³⁸Th

Corresponding author: Xu Yanbing,

HTML

目录

A New Heavy Neutron-rich Isotope 238Th

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

A New Heavy Neutron-rich Isotope 238Th

Corresponding author: Xu Yanbing,

HTML

目录

A New Heavy Neutron-rich Isotope ²³⁸Th

A New Heavy Neutron-rich Isotope ²³⁸Th