Fusion cross section relating to nucleosynthesis in neutron deficient nuclei with mass numbre of 130-150

• Project/Area Number: 26800161
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Research Institute of Shimizu Construction Co.
• Principal Investigator: Kinoshita Norikazu 清水建設株式会社技術研究所, その他部局等, 研究員 (40455324)
• Research Collaborator: Paul Michael ヘブライ大学, 教授 ; Wallner Anton オーストラリア国立大学, シニアフェロー ; Rehm Ernst K. アルゴンヌ国立研究所, シニアフェロー
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: p核 / 同位体組成 / 光学模型 / 準位密度 / 核反応断面積 / 熱核融合反応 / ネットワーク計算 / 天体核物理 / 熱核反応 / 中性子不足核 / プロトン捕獲 / s核 / Sm-144 / Nd-142 / Nd-143 / 極微量放射能測定 / 数値計算

Outline of Final Research Achievements

Neutron deficient nuclei, p nuclei, are synthesized via capture reactions of low energy proton and alpha particle, emission reactions of neutron and alpha particle in explosive environments. In the present work, we measured reaction cross sections by irradiating proton beam with energies of less than 8 MeV to targets with mass numbers of 130-150. We optimized models of level density and optical model potential which reproduce the experimental cross sections. When network calculations were examined, natural abundances of 130Ba, 132Ba, 136Ce, 138Ce, and 144Sm were computed well by combination of capture reaction of proton and emission reactions of nuclei. However, abundance of 138La cannot be computed by these reactions. Synthesis of 138La would be strongly affected by another reaction such as neutrino reaction.

Research Products

• [Int'l Joint Research] Australian National University/ANSTO(オーストラリア)
• [Int'l Joint Research] Berlin Institute of Technology/Senckenberg Collections/Helmholtz-Zentrum Dresden-Rossendorf(ドイツ)
• [Int'l Joint Research] University of Vienna(オーストリア)
• [Int'l Joint Research] Hebrew University of Jerusalem(イスラエル)
• [Int'l Joint Research] オーストラリア国立大学(オーストラリア)
• [Int'l Joint Research] ウイーン大学(オーストリア)
• [Int'l Joint Research] ヘブライ大学(イスラエル)
• [Int'l Joint Research] シェンケンベルク国立博物館ドレスデン/ヘルムホルツ協会/ベルリン工科大学(ドイツ)
• [Journal Article] The link between the local bubble and radioisotopic signatures on Earth (2017)
  • Author(s): Feige, J., Breitschwerdt, D., Wallner, A., Schulreich, M. M., Kinoshita, N., Paul, M., Dettbarn, C., Fifield, L. K., Golser, R., Honda, M., Linnemann, U., Matsuzaki, H., Merchel, S., Rugel, G., Steier, P., Tims, S. G., Winkler, S. R., Yamagata, T.
  • Journal Title: JPS Conference Proceedings Volume: 14 Pages: 010304-010304
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Proton capture cross sections on neutron-magic 144Sm at astrophysically relevant energies (2016)
  • Author(s): Kinoshita, N., Hayashi, K., Ueno, S., Yatsu, Y, Yokoyama, A., Takahashi, N.
  • Journal Title: Physical Review C Volume: 93 Issue: 2
  • DOI: 10.1103/physrevc.93.025801
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Recent near-Earth supernovae probed by global deposition of interstellar radioactive 60Fe (2016)
  • Author(s): Wallner, A., Feige, J., Kinoshita, N., Paul, M., Fifield, L.K., Golser, R., Honda, M., Linnemann, U., Matsuzaki, H., Merchel, S., Rugel, G., Tims, S.G., Steier, P, Yamagata, T., Winkler, S.R.
  • Journal Title: Nature Volume: 532 Issue: 7597 Pages: 69-72
  • DOI: 10.1038/nature17196
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] 海底試料中の太陽系外起源Fe-60 (2016)
  • Author(s): 木下哲一, A. Wallner, J. Feige , M. Paul, L.K. Fifield, 本多真紀, 松崎浩之, 山形武靖, R. Golser, U. Linnemann, S. Merchel, G. Rugel, S.G. Tims, S. Pavetich, M. Floehlich, P. Steier, S.R. Winkler
  • Organizer: JAMSシンポジウム
  • Place of Presentation: 歴史博物館
  • Year and Date: 2016-12-17
• [Presentation] Optimization of Hauser-Feshback statistical calculation and evolution of p nuclei with mass numbers of 130-150 in stellar environments (2016)
  • Author(s): Norikazu Kinoshita
  • Organizer: NRC-9
  • Place of Presentation: フィンランド・ヘルシンキ
  • Year and Date: 2016-08-29
  • Int'l Joint Research
• [Presentation] The link between the local bubble and radioisotopic signatures on Earth (2016)
  • Author(s): 46.Feige, J., Breitschwerdt, D., Wallner, A., Schulreich, M. M., Kinoshita, N., Paul, M., Dettbarn, C., Fifield, L. K., Golser, R., Honda, M., Linnemann, U., Matsuzaki, H., Merchel, S., Rugel, G., Steier, P., Tims, S. G., Winkler, S. R., Yamagata, T.
  • Organizer: NIC-XIV
  • Place of Presentation: 新潟市
  • Year and Date: 2016-06-20
  • Int'l Joint Research
• [Presentation] Search for supernova signature of 60Fe from manganese crust (2015)
  • Author(s): Norikazu Kinoshita, Anton Wallner, Stephen Tims, Keith Fifield, Michael Paul, Takeyasu Yamagata, Hiroyuki Matsuzaki
  • Organizer: The 6th East Asia Accelerator mass Spectrometry Symposium (EA-AMS 6)
  • Place of Presentation: 国立台湾大学
  • Year and Date: 2015-10-05
  • Int'l Joint Research
• [Presentation] 核合成に関わる142Nd(p,γ)143Pm反応と143Nd(p,n)143Pm反応の断面積測定―p核144Smの同位体組成解明を目指して― (2015)
  • Author(s): 林 和憲、上野慎吾、木下哲一、高橋成人、横山明彦
  • Organizer: 2015放射化学会年会
  • Place of Presentation: 東北大学川内北キャンパス
  • Year and Date: 2015-09-25
• [Presentation] 60Feを用いた超新星爆発の痕跡の探索 (2015)
  • Author(s): 木下哲一、A. Wallner、S. Tims、K. Fifield、M. Paul、本多真紀、 山形武靖、松崎浩之
  • Organizer: 2015放射化学会年会
  • Place of Presentation: 東北大学川内北キャンパス
  • Year and Date: 2015-09-25
• [Presentation] プロトン捕獲による質量数130-150のp核存在量の解明 (2014)
  • Author(s): 木下哲一、上野慎吾、林和憲、横山明彦
  • Organizer: 2014年地球化学会年会
  • Place of Presentation: 富山大学
  • Year and Date: 2014-09-16 – 2014-09-18
• [Presentation] 質量数140付近におけるpプロセス解明に向けた素過程の研究① ―147Sm(γ,p)反応と逆過程― (2014)
  • Author(s): 木下哲一、関本俊、大槻勤、桝本和義、浜島靖典、横山明彦
  • Organizer: 2014年日本放射化学会年会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] 質量数140付近におけるpプロセス解明に向けた素過程の研究② ―陽子過剰核の(p,γ)反応断面積の測定― (2014)
  • Author(s): 林和憲、上野慎吾、木下哲一、高橋成人、横山明彦
  • Organizer: 2014年日本放射化学会年会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] 質量数140付近におけるpプロセス解明に向けた素過程の研究③ ―プロトン捕獲反応による同位体比のモデル計算― (2014)
  • Author(s): 上野慎吾、木下哲一、林和憲、横山明彦
  • Organizer: 2014年日本放射化学会年会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2014-09-11 – 2014-09-13