Status of heavy element research using GARIS at RIKEN

被引：74
|
作者：
Morita, K [1 ]
Morimoto, K
Kaji, D
Goto, S
Haba, H
Ideguchi, E
Kanungo, R
Katori, K
Koura, H
Kudo, H
Ohnishi, T
Ozawa, A
Peter, JC
Suda, T
Sueki, K
Tanihata, I
Tokanai, F
Xu, H
Yeremin, AV
Yoneda, A
Yoshida, A
Zhao, YL
Zheng, T
机构：
[1] Inst Phys & Chem Res, RIKEN, Wako, Saitama 3510198, Japan
[2] Univ Tokyo, Ctr Nucl Sci, Wako, Saitama 3510198, Japan
[3] Niigata Univ, Dept Chem, Niigata 9502181, Japan
[4] Waseda Univ, Adv Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan
[5] ISMRA Univ Caen, LPC Caen, F-14050 Caen, France
[6] Univ Tsukuba, Ibaraki 3058577, Japan
[7] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan
[8] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[9] Joint Nucl Res Inst, Flerov Lab Nucl React, RU-141980 Dubna, Russia
[10] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
[11] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
来源：
NUCLEAR PHYSICS A | 2004年 / 734卷
关键词：
D O I：
10.1016/j.nuclphysa.2004.01.019
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A gas-filled recoil separator GARIS was installed at the RIKEN Linear Accelerator facility. Using the separator, two reactions, Pb-208(Ni-64,1n), and Bi-209(Ni-64,1n) were investigated. In the first reaction we observed fourteen a-decay chains which were assigned to be the decays starting from the isotope (271)Ds(Z=110). The alpha-decay energies as well as the decay times coincided well with the values reported by GSI group. Existence of an isomeric state in (271)Ds became clear from the present work. In the second reaction we have observed 44 a-decay chains that can be assigned to subsequent decays from (272) 111. The present result is the first clear confirmation for the discovery of (272)111 and its alpha-decay products, (264)Bh and (268)Mt, reported previously by a GSI group. New information on their half lives and decay energies is presented.
引用
收藏
页码：101 / 108
页数：8
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