New Formula for Spontaneous Fission Half-lives of Heavy Nuclei

XU Chang; REN Zhong-Zhou; WANG Zai-Jun

Chinese Physics C> 2005, Vol. 29> Issue(7) : 673-676

New Formula for Spontaneous Fission Half-lives of Heavy Nuclei

Department of Physics, Nanjing University,Nanjing 210008,China2 Center of Theoretical Nuclear Physics,National Laboratory of Heavy-Ion Accelerator,Lanzhou 730000,China

Abstract
HTML
Reference
Related

PDF

Abstract：
Systematic calculations on spontaneous fission half-lives of heavy nuclei are carried out by Swiatecki's formula with renewed parameters and by its generalized form. A new formula with only four parameters is also proposed for spontaneous fission half-lives.Experimental half-lives are well reproduced by the three formulae. We have found from systematics of available data that there is a long lifetime line of spontaneous fission N=Z+52 for heavy elements with Z≥90. The new formula can be used to predict the spontaneous fission half-lives of heavy nuclei not far away from this long lifetime line.

References

[1]

. Bohr N, Wheeler J A. Phys. Rev. , 1939, 56: 4262. Flerov, Petrjak. Phys. Rev. , 1940, 58: 893. Seaborg G T. Phys. Rev. , 1952, 88: 14294. Swiatecki W J. Phys. Rev. , 1955, 100: 9375. Vandenbosch R, Huizenga J R. Nuclear Fission. New York: Academic Press, 1973. 16. Mller P, Nix J R, Swiatecki W J.Nucl . Phys. , 1989, A492: 3497. Audi G, Wapstra A H. Nucl. Phys. , 2003, A729: 38. Lilley J. Nuclear Physics. Chichest er: Wiley, 2002. 419. Holden N E, Hoffman D C. Pure. Appl. Chem. , 2000, 72: 152510. Viola V E, Seaborg G T. J. Inorg. Nucl. Chem. , 1966, 28: 74111. REN Zhong-Zhou, XU Chang, WANG Zai-Jun. Phys. Rev. , 2004,C70: 03430412. Hofmann S, Münzenberg G.Rev. Mod. Phys. , 2000, 72: 73313. XU Chang, REN Zhong-Zhou. Phys. Rev. , 2004, C69: 024614

[1]	GAO Yong-Hua , HOU Zhao-Yu , WANG Yan-Zhao , CAO He-Fei , DONG Yan-Hui . Nuclear Effect Parameter's Formula of the Nuclear Gluon Distribution Function. Chinese Physics C, 2007, 31(12): 1109-1111.
[2]	SONG Yu-Shou , LUO Wei , TANG Li-Guang , HU Bi-Tao . The Application of Fission Fragments Chamber in Direct Measurement of Heavy Λ Hypernucear Lifetime. Chinese Physics C, 2007, 31(8): 755-759.
[3]	DONG Tie-Kuang , REN Zhong-Zhou . Calculations of α-Decay Half-Lives by the Generalized Viola-Seaborg Formula. Chinese Physics C, 2006, 30(2): 113-117.
[4]	GAO Yong-Hua , DUAN Chun-Gui , HOU Zhao-Yu , HE Zhen-Min . Nuclear Density Empicical Formula of the Nucleus and the Nuclear Effect of the Nucleon Structure Function. Chinese Physics C, 2004, 28(3): 290-293.
[5]	XU Chang , REN Zhong-Zhou . Study on the α-Decay Lifetimes of Superheavy Elements. Chinese Physics C, 2003, 27(12): 1089-1094.
[6]	LI Ming-Liang , XU Fu-Xin . A New Relation of Parameters of Bohr-Mottelson Rotational Spectra Formula. Chinese Physics C, 2003, 27(6): 511-514.
[7]	ZHANG Yu-Hu , MA Ying-Jun . A New Level Scheme of ¹²⁷I. Chinese Physics C, 2002, 26(2): 104-107.
[8]	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 . A New Heavy Neutron-rich Isotope ²³⁸Th. Chinese Physics C, 1999, 23(1): 93-95.
[9]	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.
[10]	Wang Shuhua , Zhou Zuoxu , Chai Zhengwei . Improvement on Momentum Distribution Formula of Relativistic Heavy Ion Fragments. Chinese Physics C, 1998, 22(2): 106-110.
[11]	Wu Lianao , Liu Gang . A New Formula for the Spectra of Axial Symmetric and Transition Nuclei and a Quantity to Identify the Nuclear γ Deformation. Chinese Physics C, 1996, 20(4): 339-344.
[12]	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.
[13]	WANG Su-Fang , CAI Wei , ZHENG Ji-Wen , LIANG Guo-Zhao . STUDY ON CROSS SECTION OF THE SHORT LIFE EVAPORATION RESIDUES IN REACTION ¹²C+¹¹²Sn. Chinese Physics C, 1989, 13(7): 627-631.
[14]	LIU Guo-Xing , CHEN Ke-Liang , ZHENG Ji-Wen , WANG Su-Fang , BAI Xing-Ping , YU Xian , FAN Zhi-Guo . MEASUREMENT OF FISSION FRAGMENT ANGULAR DISTRIBUTION IN HEAVY-IONS INDUCED REACTION. Chinese Physics C, 1989, 13(8): 733-739.
[15]	HUANG Hai-Xin , LIN Xin-Wei , ZENG Jin-Yan . COMPARISON BETWEEN HARRIS AND WU-ZENG'S FORMULAS FOR ROTATIONAL SPECTRA OF DEFORMED NUCLEI. Chinese Physics C, 1989, 13(8): 744-751.
[16]	TANG Xiao-Wei . ON THE SPONTANEOUS PION EMISSION BY HEAVY NUCLEI. Chinese Physics C, 1988, 12(5): 584-586.
[17]	DAI Guang-Xi , WANG Zheng-Da . THE SHAPE OF FISSION SCISSION POINT. Chinese Physics C, 1985, 9(5): 622-624.
[18]	HE Ze-Jun , LI Pan-Lin , ZHANG Jia-Ju . DIFFUSION MODEL OF HEAVY NUCLEUS FISSION. Chinese Physics C, 1983, 7(5): 611-617.
[19]	ZHANG HUAN-QIAO , DING SHENG-YUE , LIU ZU-HUA , ZHANG GUI-SHAN , LIU ZHAO-MING , TANG XIO-WEI , LI HUAN-TIE . EXPERIMETAL SEARCH FOR HIGH ENERGY γ RAYS IN THE SPONTANEOUTANEOUS FISSIONS OF ²⁵²Cf. Chinese Physics C, 1982, 6(4): 491-494.
[20]	LIU GOU-XING , WANG ZJO-GOU , YIN SHU-ZHI , HAO BIN-GAN , YUAN SHUANG-GUI , XIA XING-SHUO . ANGULAR DISTRIBUTIONS OF FISSION FRAGMENTS AND THE SHAPES OF THE SADDLE POINT OF COMPOUND NUCLEI. Chinese Physics C, 1978, 2(3): 242-248.

Access

Get Citation

XU Chang, REN Zhong-Zhou and WANG Zai-Jun. New Formula for Spontaneous Fission Half-lives of Heavy Nuclei[J]. Chinese Physics C, 2005, 29(7): 673-676.

XU Chang, REN Zhong-Zhou and WANG Zai-Jun. New Formula for Spontaneous Fission Half-lives of Heavy Nuclei[J]. Chinese Physics C, 2005, 29(7): 673-676. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2004-11-12
Revised: 1900-01-01

Article Metric

Article Views(2950)
PDF Downloads(530)
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

New Formula for Spontaneous Fission Half-lives of Heavy Nuclei

Corresponding author: REN Zhong-Zhou,

Department of Physics, Nanjing University,Nanjing 210008,China2 Center of Theoretical Nuclear Physics,National Laboratory of Heavy-Ion Accelerator,Lanzhou 730000,China

Received Date: 2004-11-12

Accepted Date: 1900-01-01

Available Online: 2005-07-05

Abstract: Systematic calculations on spontaneous fission half-lives of heavy nuclei are carried out by Swiatecki's formula with renewed parameters and by its generalized form. A new formula with only four parameters is also proposed for spontaneous fission half-lives.Experimental half-lives are well reproduced by the three formulae. We have found from systematics of available data that there is a long lifetime line of spontaneous fission N=Z+52 for heavy elements with Z≥90. The new formula can be used to predict the spontaneous fission half-lives of heavy nuclei not far away from this long lifetime line.

HTML

Reference (1)

New Formula for Spontaneous Fission Half-lives of Heavy Nuclei

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article