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J. Phys. Soc. Jpn. 81 (2012) 103201 (4 pages)  |Previous Article| |Next Article|  |Table of Contents|
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New Result in the Production and Decay of an Isotope, 278113, of the 113th Element

Kosuke Morita1, Kouji Morimoto1, Daiya Kaji1, Hiromitsu Haba1, Kazutaka Ozeki1, Yuki Kudou1, Takayuki Sumita2,1, Yasuo Wakabayashi1, Akira Yoneda1, Kengo Tanaka2,1, Sayaka Yamaki3,1, Ryutaro Sakai4,1, Takahiro Akiyama3,1, Shin-ichi Goto5, Hiroo Hasebe1, Minghui Huang1, Tianheng Huang6, Eiji Ideguchi7, Yoshitaka Kasamatsu1, Kenji Katori1, Yoshiki Kariya5, Hidetoshi Kikunaga8, Hiroyuki Koura9, Hisaaki Kudo5, Akihiro Mashiko10, Keita Mayama10, Shin-ichi Mitsuoka9, Toru Moriya10, Masashi Murakami5, Hirohumi Murayama5, Saori Namai10, Akira Ozawa11, Nozomi Sato9, Keisuke Sueki11, Mirei Takeyama10, Fuyuki Tokanai10, Takayuki Yamaguchi3, and Atsushi Yoshida1

1RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
2Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
3Department of Physics, Saitama University, Saitama 338-8570, Japan
4Department of Chemistry, Saitama University, Saitama 338-8570, Japan
5Department of Chemistry, Niigata University, Niigata 950-2181, Japan
6Institute of Modern Physics, Chinese Academy of Science, 730000 Lanzhou, P. R. China
7Center for Nuclear Study, University of Tokyo, Wako, Saitama 351-0198, Japan
8Research Center for Electron Photon Science, Tohoku University, Sendai 982-0826, Japan
9Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
10Department of Physics, Yamagata University, Yamagata 990-8560, Japan
11University of Tsukuba, Tsukuba, Ibaraki 305-8071, Japan

(Received August 29, 2012; Accepted September 10, 2012; Published September 27, 2012)

An isotope of the 113th element, i.e., 278113, was produced in a nuclear reaction with a 70Zn beam on a 209Bi target. We observed six consecutive α-decays following the implantation of a heavy particle in nearly the same position in the semiconductor detector under an extremely low background condition. The fifth and sixth decays are fully consistent with the sequential decays of 262Db and 258Lr in both decay energies and decay times. This indicates that the present decay chain consisted of 278113, 274Rg (Z=111), 270Mt (Z=109), 266Bh (Z=107), 262Db (Z=105), and 258Lr (Z=103) with firm connections. This result, together with previously reported results from 2004 and 2007, conclusively leads to the unambiguous production and identification of the isotope 278113 of the 113th element. ©2012 The Physical Society of Japan

URL: http://jpsj.ipap.jp/link?JPSJ/81/103201/
DOI: 10.1143/JPSJ.81.103201


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References | Citing Article (1)

  1. K. Morita, K. Morimoto, D. Kaji, T. Akiyama, S. Goto, H. Haba, E. Ideguchi, R. Kanungo, K. Katori, H. Koura, H. Kudo, T. Ohnishi, A. Ozawa, T. Suda, K. Sueki, H. S. Xu, T. Yamaguchi, A. Yoneda, A. Yoshida, and Y. L. Zhao: J. Phys. Soc. Jpn. 73 (2004) 2593[JPSJ].
  2. K. Morita, K. Morimoto, D. Kaji, T. Akiyama, S. Goto, H. Haba, E. Ideguchi, K. Katori, H. Koura, H. Kikunaga, H. Kudo, T. Ohnishi, A. Ozawa, N. Sato, T. Suda, K. Sueki, F. Tokanai, T. Yamaguchi, A. Yoneda, and A. Yoshida: J. Phys. Soc. Jpn. 76 (2007) 045001[JPSJ].
  3. P. A. Wilk, K. E. Gregorich, A. Türler, C. A. Laue, R. Eichler, V. Ninov, J. L. Adams, U. W. Kirbach, M. R. Lane, D. M. Lee, J. B. Patin, D. A. Shaughnessy, D. A. Strellis, H. Nitsche, and D. C. Hoffman: Phys. Rev. Lett. 85 (2000) 2697[APS].
  4. K. Morita, K. Morimoto, D. Kaji, H. Haba, K. Ozeki, Y. Kudou, N. Sato, T. Sumita, A. Yoneda, T. Ichikawa, Y. Fujimori, S. Goto, E. Ideguchi, Y. Kasamatsu, K. Katori, Y. Komori, H. Koura, H. Kudo, K. Ooe, A. Ozawa, F. Tokanai, K. Tsukada, T. Yamaguchi, and A. Yoshida: J. Phys. Soc. Jpn. 78 (2009) 064201[JPSJ].
  5. L. C. Northcliffe and R. F. Schilling: Nucl. Data Tables A 7 (1970) 233.
  6. K. Morita, K. Morimoto, D. Kaji, H. Haba, E. Ideguchi, R. Kanungo, K. Katori, H. Koura, H. Kudo, T. Ohnishi, A. Ozawa, T. Suda, K. Sueki, I. Tanihata, H. Xu, A. V. Yeremin, A. Yoneda, A. Yoshida, Y.-L. Zhao, and T. Zheng: Eur. Phys. J. A 21 (2004) 257[CrossRef].
  7. D. Kaji, K. Morita, K. Morimoto, H. Haba, and H. Kudo: Proc. Radiochim. Acta 1 (2011) 105.
  8. K. Morita, K. Morimoto, D. Kaji, H. Haba, E. Ideguchi, J. C. Peter, R. Kanungo, K. Katori, H. Koura, H. Kudo, T. Ohnishi, A. Ozawa, T. Suda, K. Sueki, I. Tanihata, H. Xu, A. V. Yeremin, A. Yoneda, A. Yoshida, Y.-L. Zhao, T. Zheng, S. Goto, and F. Tokanai: J. Phys. Soc. Jpn. 73 (2004) 1738[JPSJ].
  9. B. D. Wilkins, M. J. Fluss, S. B. Kaufman, C. E. Gross, and E. P. Steinberg: Nucl. Instrum. Methods 92 (1971) 381.
  10. R. Dressler, B. Eichler, D. T. Jost, D. Piguet, A. Türler, Ch. Düllmann, R. Eichler, H. W. Gäggeler, M. Gärtner, M. Schädel, S. Taut, and A. B. Yakushev: Phys. Rev. C 59 (1999) 3433[APS].
  11. K.-H. Schmidt, C.-C. Sahm, K. Pielenz, and H.-G. Clerc: Z. Phys. A 316 (1984) 19.
  12. Y. A. Akovali: Nucl. Data Sheets 94 (2001) 131.
  13. R. B. Firestone and V. S. Shirley: Table of Isotopes (Wiley, New York, 1996) 8th ed., Vol. 2, Appendix-F, p. F-47.
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