Measurement of the Cross Sections for Ba Isotopes

XU Yan-Bing; YANG Wei-Fan; YUAN Shuang-Gui; XIAO Yong-Hou; PAN Qiang-Yan; LI Ying-Jun

Chinese Physics C> 2002, Vol. 26> Issue(6) : 589-593

Measurement of the Cross Sections for Ba Isotopes

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

Abstract
HTML
Reference
Related

PDF

Abstract：
Present experiment was performed in order to get more information about intermediate energy heavy ion collisions for the further understanding of that how nuclear reaction mechanisms change between the two extreme types of nuclear behaviors, the nuclear collisions at low and high energy. Ba isotopes were produced by 60 MeV/u ^{18O bombardment of nature uranium via ²³⁸U(¹⁸O,X) reaction, and then separated from the irradiated U targets by using radiochemical procedure. The accumulative sections of Ba isotopes are obtained through the processing and analyzing of time sequence γ ray spectra. As a result, the two peak phenomenon in the distribution of the Ba isotopes is observed. It can be presumed that the occurrence of the double Gaussian distribution is weakly related to the projectile energy, but closely related to the projectile target combination. Present experiment also implied however, that fragmentation reaction induced by intermediate energy heavy ions followed by radiochemical separation is an efficacious method to produce nuclei far from stability, thereby to study their decay properties.}

References

[1]

. Loveland W, Aleklett K, Sihver L et al. Phys.,Rew.C ,1990,41(3):973—9872. Schroder W U, Huizenga J R. Nucl. Phys.,1989,A502:473c 3. Viola V E. Nucl. Phys.,1989,A502:531c 4. HU Ji-Min. Physics of Nuclear Fission, Beijing:Beijing University Press, 1999,133—211(in Chinese)(胡济民.核裂变物理学,北京:北京大学出版社,1999,133—211)5. Tsekhanovich I, Denschlag H O, Davi M et al. Nucl. Phys.,1999,A658:2176. de Saint Simon M, Haan S, Audi G et al. Phys. Rew.C ,1982,26(6):2447—2457 7. Scott D K. Nucl. Phys.,1981,A354:375 8. YU Y W, Lee C H, Moody K J et al. Phys. Rew. C, 1987,36(6):2396—2402 9. McGaughey P L, Loverland W, Morrissey D J et al. Phys. Rew. C, 1982,31(3):896—909

[1]	, , , , . Cross-section measurements for (n, 2n) reactions on stannum isotopes in the neutron energy range of 13.5 to 14.6 MeV. Chinese Physics C, 2008, 32(1): 28-30. doi: 10.1088/1674-1137/32/1/006
[2]	FENG Zhao-Qing , JIN Gen-Ming , FU Fen , LI Jun-Qing . Isotopic Dependence of Production Cross Sections of Superheavy Nuclei in Hot Fusion Reactions. Chinese Physics C, 2007, 31(4): 366-370.
[3]	ZHENG Shi-Jie , XU Fu-Rong . Shape Coexistence in Light Krypton Isotopes. Chinese Physics C, 2006, 30(S2): 121-123.
[4]	PU Zhong-Sheng , GUAN Qiu-Yun , MA Jun , YAN Dong . Cross Section Measurements for (n,2n), (n,p) and (n,α) Reactions on Germanium Isotopes at the Neutron Energy around 14MeV. Chinese Physics C, 2006, 30(12): 1171-1174.
[5]	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.
[6]	HE Guo-Zhu , LUO Jun-Hua , LIU Zhong-Jie , KONG Xiang-Zhong . Cross Section Measurements for (n,2n),(n,p)and (n,α) Reactions on Strontium Isotopes at the Neutron Energy About 14MeV. Chinese Physics C, 2005, 29(11): 1057-1060.
[7]	LUO Jun-Hua , ZHOU Feng-Qun , KONG Xiang-Zhong . Cross-Section Measurements for Reactions on Platinum Isotopes in the Neutron Energy Range of 13.5 to 14.6MeV. Chinese Physics C, 2005, 29(6): 561-564.
[8]	PU Zhong-Sheng , KONG Xiang-Zhong , WEI Guo-Cong . Cross Section Measurements for(n,2n)Reactions on Neodymium Isotopes at the Neutron Energies of 13.5,14.1 and 14.6 MeV. Chinese Physics C, 2004, 28(9): 958-960.
[9]	PU Zhong-Sheng , YANG Jing-Kang , KONG Xiang-Zhong . Cross Section Measurements for (n,2n),(n,p) and (n,n′α)Reactions on Gallium Isotopes at the Neutron Energies of 13.5, 14.1 and 14.6 MeV. Chinese Physics C, 2003, 27(7): 581-584.
[10]	ZHANG Hu-Yong , SHEN Wen-Qing , MA Yu-Gang , CAI Xiang-Zhou , FANG De-Qing , ZHONG Chen , YU Li-Ping , ZHAN Wen-Long , GUO Zhong-Yan , XIAO Guo-Qing , WANG Jian-Song , WANG Jin-Chuan , , , , . Measurements of Reaction Cross Section for F Isotopes and Possible Proton Skin Structure for ¹⁷F. Chinese Physics C, 2002, 26(1): 35-39.
[11]	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.
[12]	Li Guangsheng , Dai Zhengyu , Liu Xiang'an , Zhang Lankuan , Wen Shuxian , Yuan Guajun , Wu Xiaoguang , Weng Peikun , Li Shenggang , Yang Chunxiang . Lifetime Measurements of the States Around the Backbend in ¹²⁶Ba. Chinese Physics C, 1998, 22(4): 299-301.
[13]	Wang Qi , Lu Jun , Xu Hushan , Li Songlin , Zhu Yongtai , Yin Xu , Fan Enjie , Zhang Yuhu , Li Zhichang , Zhao Kui , Lu Xiuqin , Hu Xiaoqing . The Cross Section Fluctuation of the Isotope Projectile-Like Fragments in the Dissipative Process of Reaction ¹⁹F+⁵¹V. Chinese Physics C, 1996, 20(4): 289-296.
[14]	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.
[15]	Kong Xiangzhong , Wang Yongchang , Yang Jingkang , Yuan Junqian . The Cross Section Measurements for the Ba(n, x)¹³⁴Cs,¹³⁴Ba(n, 2n)¹³³Ba,¹⁴⁰Ce(n, 2n)¹³⁹Ce,¹⁴²Ce(n,2n)¹⁴¹Ce and ²³Na(n,2n)²²Na Reactions. Chinese Physics C, 1995, 19(9): 781-785.
[16]	Sang Jianping , Liu Yong . The Microscopic Investigation of High-Spin States for Even-Even Nuclei(III)Application to isotopes ¹²⁶Ba,¹²⁸Ba and ¹³⁰Ba. Chinese Physics C, 1994, 18(12): 1102-1106.
[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]	SUN Xiang-Fu , YU Jian-Fang , GUO Ying-Xiang , LEI Xiang-Guo , LUO Yi-Xiao , WANG Ji-Cheng , XU Xiao-Ji , WEN Shu-Xian , WENG Pei-Kun , LI Sheng-Gang , YANG Chun-Xiang . Measurement of ¹²⁵Ba High Spin States. Chinese Physics C, 1992, 16(1): 62-67.
[19]	XU Shu-Wei , YUAN Shuang-Gui , GUO Jun-Sheng , LIU Man-Qing . The Decay of ¹²⁰Ba. Chinese Physics C, 1991, 15(2): 170-177.
[20]	GUO JUN-SHENG , SUN XI-JUN , XU XIAO-JI , WANG JUN , LIU HONG-YE . THE MEASUREMENT OF THE EXCITATION FUNCTIONS OF ISOTOPES OF Fr AND At, PRODUCED IN THE BOMBARDMENT OF ¹²C ON ²⁰⁹Bi. Chinese Physics C, 1978, 2(2): 143-150.

Access

Get Citation

XU Yan-Bing, YANG Wei-Fan, YUAN Shuang-Gui, XIAO Yong-Hou, PAN Qiang-Yan and LI Ying-Jun. Measurement of the Cross Sections for Ba Isotopes[J]. Chinese Physics C, 2002, 26(6): 589-593.

XU Yan-Bing, YANG Wei-Fan, YUAN Shuang-Gui, XIAO Yong-Hou, PAN Qiang-Yan and LI Ying-Jun. Measurement of the Cross Sections for Ba Isotopes[J]. Chinese Physics C, 2002, 26(6): 589-593. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2001-07-02
Revised: 1900-01-01

Article Metric

Article Views(2721)
PDF Downloads(620)
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

Measurement of the Cross Sections for Ba Isotopes

Corresponding author: XU Yan-Bing,

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

Received Date: 2001-07-02

Accepted Date: 1900-01-01

Available Online: 2002-06-05

Abstract: Present experiment was performed in order to get more information about intermediate energy heavy ion collisions for the further understanding of that how nuclear reaction mechanisms change between the two extreme types of nuclear behaviors, the nuclear collisions at low and high energy. Ba isotopes were produced by 60 MeV/u ^{18O bombardment of nature uranium via ²³⁸U(¹⁸O,X) reaction, and then separated from the irradiated U targets by using radiochemical procedure. The accumulative sections of Ba isotopes are obtained through the processing and analyzing of time sequence γ ray spectra. As a result, the two peak phenomenon in the distribution of the Ba isotopes is observed. It can be presumed that the occurrence of the double Gaussian distribution is weakly related to the projectile energy, but closely related to the projectile target combination. Present experiment also implied however, that fragmentation reaction induced by intermediate energy heavy ions followed by radiochemical separation is an efficacious method to produce nuclei far from stability, thereby to study their decay properties.}

HTML

Reference (1)

Measurement of the Cross Sections for Ba Isotopes

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article