Production of an isotope with element 110 in the fusion reaction between silicon-30 and curium-248

2012 Fiscal Year Final Research Report

• Project/Area Number: 22540316
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: NISHIO Katsuhisa 独立行政法人日本原子力研究開発機構, 先端基礎研究センター, 研究主幹 (70343928)
• Co-Investigator(Renkei-kenkyūsha): MITSUOKA Shin-ichi 独立行政法人日本原子力研究開発機構, 先端基礎研究センター, 研究主幹 (40354881) ; NISHINAKA Ichiro 独立行政法人日本原子力研究開発機構, 先端基礎研究センター, 研究副主幹 (70354884)
• Project Period (FY): 2010 – 2012
• Keywords: 超重元素 / 重イオン融合反応 / 核分裂

Research Abstract

Fusion-evaporation reaction using actinide target nuclei is extensively used to produce super-heavy nuclei (SHN). The fusion reaction itself, however, has not been fully understood, which makes it difficult to predict the production cross sections of SHN. We proposed a method to determine the fusion probability by measuring heavy-ion induced fission. Effect of nuclear deformation on fusion was investigated, and it was shown that SHN can be produced at sub-barrier energies.

Research Products

• [Journal Article] Fusion probabilities in the reactions ^<40,48>Ca + ^<238>U at energies around the Coulomb barrier (2012)
  • Author(s): K.Nishio, S. Mitsuoka, I. Nishinaka, H. Makii, Y. Wakabayashi, H. Ikezoe, K. Hirose, T. Ohtsuki, Y. Aritomo, and S. Hofmann
  • Journal Title: Physical Review C Volume: 86 Pages: 034608 (1-6)
  • DOI: DOI:10.1103/PhysRevC.86.034608
  • Peer Reviewed
• [Journal Article] Evidence for hindrance in fusion between sulfur and lead nuclei (2012)
  • Author(s): J. Khuyagbaatar, K. Nishio, S. Hofmann, D. Ackermann, M. Block, S. Heinz, F. P. Hesberger, K. Hirose, H. Ikezoe, B. Kinlder, B. Lommel, H. Makii, S. Mitsuoka, I. Nishinaka, T. Ohtsuki, Y. Wakabayashi, and S. Yan
  • Journal Title: Physical Review C Volume: 86 Pages: 064602 (1-6)
  • DOI: DOI:10.1103/PhysRevC.86.064602
  • Peer Reviewed
• [Journal Article] Dynamical approach to heavy-ion induced fission using actinide target nuclei at energues around the Coulomb barrier (2012)
  • Author(s): Y. Aritomo, K. Hagino, K. Nishio, S. Chiba
  • Journal Title: Physical Review C Volume: 85 Pages: 044614(1-15)
  • DOI: DOI:10.1103/PhysRevC.85.044614
  • Peer Reviewed
• [Journal Article] Evidence for quasifission in the sub-barrier reaction of ^<30>Si + ^<238>U (2012)
  • Author(s): K.Nishio, H.Ikezoe, I.Nishinaka, S. Mitsuoka, K.Hirose, T. Ohtsuki, Y. Watanabe, Y. Aritomo, and S. Hofmann
  • Journal Title: Physical Review C Volume: 82 Pages: 044604 (1-5)
  • DOI: DOI:10.1103/PhysRevC.82.044604
  • Peer Reviewed
• [Journal Article] Nuclear orientation in the reaction ^<34>S + ^<238>U and synthesis of the new isotope ^<268>Hs (2010)
  • Author(s): K. Nishio, S. Hofmann, F.P. Hesberger, D. Ackermann, S. Antalic, Y. Aritomo, V.F. Comas, Ch.E. Dullmann, A. Gorshkov, R. Graeger, K. Hagino, S. Heinz, J.A. Heredia, K. Hirose, H. Ikezoe, K. Khuyagbaatar, B. Kindler, I. Kojouharov, B. Lommel, R. Mann, S. Mitsuoka, Y. Nagame, I. Nishinaka, T. Ohtsuki, A.G. Popeko, S. Saro, M. Schadel, A.Turler, Y. Watanabe, A. Yakushev, and A.V. Yeremin
  • Journal Title: Physical Review C Volume: 82 Pages: 024611, (1-9)
  • DOI: DOI:10.1103/PhysRevC.82.024611
  • Peer Reviewed
• [Presentation] Fission research program at JAEA (2013)
  • Author(s): K. Nishio
  • Organizer: The 10th ASRC International Workshop on Nuclear Fission and Decay of Exotic Nuclei
  • Place of Presentation: Tokai, Japan
  • Year and Date: 20130321-22
• [Presentation] Fusion-fission study at JAEA for heavy-element synthesis (2012)
  • Author(s): K. Nishio
  • Organizer: Dynamics and the Emission of Prompt Neutrons and Gamma Rays (Theory-2)
  • Place of Presentation: Biarritz, France
  • Year and Date: 20121128-30
• [Presentation] In-beam fission study at JAEA for heavy-element synthesis (2012)
  • Author(s): K. Nishio
  • Organizer: International Conference on Recent Trends in Nuclear Physics 2012
  • Place of Presentation: Chandigarh, India
  • Year and Date: 20121119-21
• [Presentation] Fusion-fission study at JAEA for heavy element synthesis (2012)
  • Author(s): K. Nishio
  • Organizer: VIII Tours Symposium on Nuclear Physics and Astrophysics
  • Place of Presentation: Lenzkirch-Saig, Germany
  • Year and Date: 20120902-07
• [Presentation] Nuclear orientation in fusion and synthesis of heavy element at sub-barrier energy (2011)
  • Author(s): K. Nishio
  • Organizer: 7th.International Conference on Dynamic Aspects of Nuclear Fission
  • Place of Presentation: Smolenice, Slovakia
  • Year and Date: 20111017-21
• [Presentation] Fission dynamics in heavy ion collisions on ^<238>U (2010)
  • Author(s): K. Nishio
  • Organizer: Scientific Workshop on Nuclear Fission and Dynamics and the Emission of Prompt Neutrons and Gamma Rays
  • Place of Presentation: Sinaia, Romania
  • Year and Date: 20100927-29
• [Presentation] Effects of nuclear orientation on fusion and fission process for reactions using ^<238>U target nucleus (2010)
  • Author(s): K. Nishio
  • Organizer: 24^<th> International Nuclear Physics Conference 2010
  • Place of Presentation: Vancouver, Canada
  • Year and Date: 20100704-09