New result in the production and decay of an isotope, 278113, of the 113th element

Kosuke Morita, Kouji Morimoto, Daiya Kaji, Hiromitsu Haba, Kazutaka Ozeki, Yuki Kudou, Takayuki Sumita, Yasuo Wakabayashi, Akira Yoneda, Kengo Tanaka, Sayaka Yamaki, Ryutaro Sakai, Takahiro Akiyama, Shin Ichi Goto, Hiroo Hasebe, Minghui Huang, Tianheng Huang, Eiji Ideguchi, Yoshitaka Kasamatsu, Kenji KatoriYoshiki Kariya, Hidetoshi Kikunaga, Hiroyuki Koura, Hisaaki Kudo, Akihiro Mashiko, Keita Mayama, Shin Ichi Mitsuoka, Toru Moriya, Masashi Murakami, Hirohumi Murayama, Saori Namai, Akira Ozawa, Nozomi Sato, Keisuke Sueki, Mirei Takeyama, Fuyuki Tokanai, Takayuki Yamaguchi, Atsushi Yoshida

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Abstract

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 δ-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.

Original languageEnglish
Article number103201
Journaljournal of the physical society of japan
Volume81
Issue number10
DOIs
Publication statusPublished - Oct 1 2012

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isotopes
decay
nuclear reactions
implantation
detectors
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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New result in the production and decay of an isotope, 278113, of the 113th element. / Morita, Kosuke; Morimoto, Kouji; Kaji, Daiya; Haba, Hiromitsu; Ozeki, Kazutaka; Kudou, Yuki; Sumita, Takayuki; Wakabayashi, Yasuo; Yoneda, Akira; Tanaka, Kengo; Yamaki, Sayaka; Sakai, Ryutaro; Akiyama, Takahiro; Goto, Shin Ichi; Hasebe, Hiroo; Huang, Minghui; Huang, Tianheng; Ideguchi, Eiji; Kasamatsu, Yoshitaka; Katori, Kenji; Kariya, Yoshiki; Kikunaga, Hidetoshi; Koura, Hiroyuki; Kudo, Hisaaki; Mashiko, Akihiro; Mayama, Keita; Mitsuoka, Shin Ichi; Moriya, Toru; Murakami, Masashi; Murayama, Hirohumi; Namai, Saori; Ozawa, Akira; Sato, Nozomi; Sueki, Keisuke; Takeyama, Mirei; Tokanai, Fuyuki; Yamaguchi, Takayuki; Yoshida, Atsushi.

In: journal of the physical society of japan, Vol. 81, No. 10, 103201, 01.10.2012.

Research output: Contribution to journalArticle

Morita, K, Morimoto, K, Kaji, D, Haba, H, Ozeki, K, Kudou, Y, Sumita, T, Wakabayashi, Y, Yoneda, A, Tanaka, K, Yamaki, S, Sakai, R, Akiyama, T, Goto, SI, Hasebe, H, Huang, M, Huang, T, Ideguchi, E, Kasamatsu, Y, Katori, K, Kariya, Y, Kikunaga, H, Koura, H, Kudo, H, Mashiko, A, Mayama, K, Mitsuoka, SI, Moriya, T, Murakami, M, Murayama, H, Namai, S, Ozawa, A, Sato, N, Sueki, K, Takeyama, M, Tokanai, F, Yamaguchi, T & Yoshida, A 2012, 'New result in the production and decay of an isotope, 278113, of the 113th element', journal of the physical society of japan, vol. 81, no. 10, 103201. https://doi.org/10.1143/JPSJ.81.103201
Morita, Kosuke ; Morimoto, Kouji ; Kaji, Daiya ; Haba, Hiromitsu ; Ozeki, Kazutaka ; Kudou, Yuki ; Sumita, Takayuki ; Wakabayashi, Yasuo ; Yoneda, Akira ; Tanaka, Kengo ; Yamaki, Sayaka ; Sakai, Ryutaro ; Akiyama, Takahiro ; Goto, Shin Ichi ; Hasebe, Hiroo ; Huang, Minghui ; Huang, Tianheng ; Ideguchi, Eiji ; Kasamatsu, Yoshitaka ; Katori, Kenji ; Kariya, Yoshiki ; Kikunaga, Hidetoshi ; Koura, Hiroyuki ; Kudo, Hisaaki ; Mashiko, Akihiro ; Mayama, Keita ; Mitsuoka, Shin Ichi ; Moriya, Toru ; Murakami, Masashi ; Murayama, Hirohumi ; Namai, Saori ; Ozawa, Akira ; Sato, Nozomi ; Sueki, Keisuke ; Takeyama, Mirei ; Tokanai, Fuyuki ; Yamaguchi, Takayuki ; Yoshida, Atsushi. / New result in the production and decay of an isotope, 278113, of the 113th element. In: journal of the physical society of japan. 2012 ; Vol. 81, No. 10.
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abstract = "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 δ-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.",
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T1 - New result in the production and decay of an isotope, 278113, of the 113th element

AU - Morita, Kosuke

AU - Morimoto, Kouji

AU - Kaji, Daiya

AU - Haba, Hiromitsu

AU - Ozeki, Kazutaka

AU - Kudou, Yuki

AU - Sumita, Takayuki

AU - Wakabayashi, Yasuo

AU - Yoneda, Akira

AU - Tanaka, Kengo

AU - Yamaki, Sayaka

AU - Sakai, Ryutaro

AU - Akiyama, Takahiro

AU - Goto, Shin Ichi

AU - Hasebe, Hiroo

AU - Huang, Minghui

AU - Huang, Tianheng

AU - Ideguchi, Eiji

AU - Kasamatsu, Yoshitaka

AU - Katori, Kenji

AU - Kariya, Yoshiki

AU - Kikunaga, Hidetoshi

AU - Koura, Hiroyuki

AU - Kudo, Hisaaki

AU - Mashiko, Akihiro

AU - Mayama, Keita

AU - Mitsuoka, Shin Ichi

AU - Moriya, Toru

AU - Murakami, Masashi

AU - Murayama, Hirohumi

AU - Namai, Saori

AU - Ozawa, Akira

AU - Sato, Nozomi

AU - Sueki, Keisuke

AU - Takeyama, Mirei

AU - Tokanai, Fuyuki

AU - Yamaguchi, Takayuki

AU - Yoshida, Atsushi

PY - 2012/10/1

Y1 - 2012/10/1

N2 - 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 δ-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.

AB - 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 δ-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.

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