A New Isotope of Z=105 with Mass Number 259

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

Chinese Physics C> 2001, Vol. 25> Issue(6) : 602-606

A New Isotope of Z=105 with Mass Number 259

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

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Abstract：
An Isotope of element 105 with mass number 259 has been produced via the reaction ²⁴¹Am(²²Ne,4n)²⁵⁹Db at E_lab=120MeV. The reaction products were transported and collected using the helium-jet technique and rotating wheel apparatus. The α decays of the products and their daughter nuclides were detected by a series of Si(Au) detectors. The Z and A of the nuclide have been unambiguously identified by the genetic relationship between the new activity and the known nuclide ²⁵⁵Lr. The new nuclide ²⁵⁹Db has a half life of (0.51±0.16)s and decay by alpha particle emission with energy of 9.47MeV. The Q_α value for new isotope ²⁵⁹Db is in good coincidence with the predicted result.

References

[1]

. Flerov G N,J.Phys.Soc.Japan Suppl.,1968,24:237. 2. Ghiorso A,Nurmia M,Eskola K et al.Phys.Rev.Lett.,1970,24:1498. 3. Ghiorso A,Nurmia M,Eskola K et al.Phys.Rev.,1971,C4:1850. 4. Kratz J V,Gober M K,Zimmermann H P et al.Phys.Rev.,1992,C45:1064. 5. Mnzenberg G,Hofmann S,Heβberger F P et al.Z.Phys.,1981,A300:107. 6. Mnzenberg G,Armbruster P,Hofmann S et al.Z.Phys.,1989,A333:163. 7. Heβberger F P,Mnzenberg G,Hofmann S et al.Z.Phys.,1985,A322:557. 8. Wapstra A H,Audi G.Nucl.Phys.1985,A432:55. 9. Mller P,Nix J R,Kratz K L.Atomic Data and Nuclear Data Tables,1997,66:31510. Blann M.University of Rochester Report,1978,URNSRL–181

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[4]	YE Wei . Isotopic Effects in Prescission Particle Emission. Chinese Physics C, 2003, 27(3): 233-237.
[5]	XU Yan-Bing , YANG Wei-Fan , YUAN Shuang-Gui , XIAO Yong-Hou , PAN Qiang-Yan , LI Ying-Jun . Measurement of the Cross Sections for Ba Isotopes. Chinese Physics C, 2002, 26(6): 589-593.
[6]	LONG Wen-Hui , MENG Jie , ZHOU Shan-Gui . Description of the New Nuclide ²⁵⁹Db and Its α-Decay Chain in Relativistic Mean Field Theory. Chinese Physics C, 2002, 26(8): 823-830.
[7]	ZENG Guo-Mo , SONG Hui-Chao . Energy Level Structure of Odd-A Tm Isotopes in A≈160 Region. Chinese Physics C, 2002, 26(10): 1021-1026.
[8]	ZHANG Yu-Hu , ZHAO Qing-Zhong , ZHANG Shuang-Quan , ZHOU Xiao-Hong , XU Hu-Shan , HUANG Wen-Xue , GUO Ying-Xiang , LEI Xiang-Guo , LIU Zhong , LU Jun , FENG Xi-Chen , GOU Quan-Bu , , , , . Experimental Study of High-spin States in Odd-Odd Nuclei around 160-180 Mass Region. Chinese Physics C, 2000, 24(S1): 21-28.
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[10]	Zhang Zhanjun , Liu Yong , Sang Jianping . Microscopic Study of Low-Lying States of Even ^190─200Pt Isotopes. Chinese Physics C, 1998, 22(9): 836-843.
[11]	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.
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[13]	Wei Zhiyong , Zhu Yongtai . Influence of IMF Internal Excitation on the Isotope Nuclear Temperature. Chinese Physics C, 1997, 21(7): 615-620.
[14]	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.
[15]	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.
[16]	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.
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[18]	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.
[19]	WEN Wan-Xin , GU Jin-Nan . Mixed Symmetry States in Gd Isotopes. Chinese Physics C, 1992, 16(4): 379-384.
[20]	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.

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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 and JIN Gen-Ming. A New Isotope of Z=105 with Mass Number 259[J]. Chinese Physics C, 2001, 25(6): 602-606.

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Received: 2000-12-01
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沈阳化工大学材料科学与工程学院沈阳 110142

A New Isotope of Z=105 with Mass Number 259

Corresponding author: FAN Hong-Mei,

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

Received Date: 2000-12-01

Accepted Date: 1900-01-01

Available Online: 2001-06-05

Abstract: An Isotope of element 105 with mass number 259 has been produced via the reaction ²⁴¹Am(²²Ne,4n)²⁵⁹Db at E_lab=120MeV. The reaction products were transported and collected using the helium-jet technique and rotating wheel apparatus. The α decays of the products and their daughter nuclides were detected by a series of Si(Au) detectors. The Z and A of the nuclide have been unambiguously identified by the genetic relationship between the new activity and the known nuclide ²⁵⁵Lr. The new nuclide ²⁵⁹Db has a half life of (0.51±0.16)s and decay by alpha particle emission with energy of 9.47MeV. The Q_α value for new isotope ²⁵⁹Db is in good coincidence with the predicted result.

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A New Isotope of Z=105 with Mass Number 259

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