Experiment on synthesis of an isotope 277112 by 208Pb+70Zn reaction

被引：154

作者：

Morita, Kosuke ^{[1
]}

Morimoto, Kouji

Kaji, Daiya

Akiyama, Takahiro

Goto, Sin-ichi

Haba, Hiromitsu

Ideguchi, Eiji

Katori, Kenji

Koura, Hiroyuki

Kudo, Hisaaki

Ohnishi, Tetsuya

Ozawa, Akira

Suda, Toshimi

Sueki, Keisuke

Tokanai, Fuyuki

Yamaguchi, Takayuki

Yoneda, Akira

Yoshida, Atsushi

机构：

[1] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[2] Saitama Univ, Dept Phys, Sakura Ku, Urawa, Saitama 3388570, Japan

[3] Niigata Univ, Ctr Instrumental Anal, Niigata 9502181, Japan

[4] Univ Tokyo, Ctr Nucl Study, Wako, Saitama 3510198, Japan

[5] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan

[6] Niigata Univ, Dept Chem, Niigata 9502181, Japan

[7] Univ Tsukuba, Tsukuba, Ibaraki 3058571, Japan

[8] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2007年 / 76卷 / 04期

关键词：

(277)112; production and decay; gas-filled recoil separator;

D O I：

10.1143/JPSJ.76.043201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The production and decay of (277)112 have been investigated using a gas-filled recoil ion separator in irradiations of Pb-208 targets with a Zn-70 beam at 349.5 MeV. We have observed two alpha-decay chains that can be assigned to subsequent decays from (277)112 produced in the Pb-208(Zn-70,n) reaction. After emitting four consecutive alpha-particles, both the chains terminate by spontaneous fission decays of (261)Rf, and the decay energies and decay times of both the chains obtained in the present work agree well with those reported by a group at Gesellschaft fur Schwerionenforschung (GSI), Germany. The present result gives the first clear confirmation of the discovery of (277)112 and its alpha-decay product (273)Ds reported previously.

引用

页数：5

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