Cross section measurements of 12C(alpha, gamma) reactions by means of an intense pulsed beam

2011 Fiscal Year Final Research Report

• Project/Area Number: 20244036
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: MIYATAKE Hiroari 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (50190799)
• Co-Investigator(Kenkyū-buntansha): ISHIYAMA Hironobu 高エネルギー加速器研究機構, 素粒子原子核研究所, 研究機関講師 (50321534) ; WATANABE Yutaka 高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (50353363) ; MAKII Hiroyuki 日本原子力研究開発機構, 先端基礎研究センター, 研究員 (20425573)
• Co-Investigator(Renkei-kenkyūsha): ARAI Shigeaki 理化学研究所, 仁科加速器研究センター, 研究支援員 (90013424) ; JEONG Sunchan 高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (00262105) ; HIRAYAMA Yoshikazu 高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (30391733) ; IMAI Nobuyuki 高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (80373273) ; HIRAYAMA Yoshikazu 大阪大学, 核物理研究センター, 助教 (10222035) ; NIKI Kazuaki 高エネルギー加速器研究機構, 加速器研究施設, 准教授 (20242167) ; OKADA Masashi 高エネルギー加速器研究機構, 加速器研究施設, 技師 (30391759) ; SUGAI Isao 高エネルギー加速器研究機構, 加速器研究施設, 研究員 (80150291) ; ARAI Shigeaki 理化学研究所, 仁科加速器研究センター, 研究支援員 (90013424)
• Research Collaborator: CHIBA Satoshi 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 (60354883) ; MITSUOKA Shinichi 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 (40354881) ; NISHINAKA Ichirou 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) ; WAKABAYASHI Yasuo 日本原子力研究開発機構, 先端基礎研究センター, 研究員 (80447359)
• Project Period (FY): 2008 – 2011
• Keywords: 元素合成 / 原子核物理 / 加速器ビームハンドリング / 天体核物理

Research Abstract

We performed the cross section measurement at E(c. m.)=2.1MeV for the key reaction 12C(α、γ) of the element synthesis in stars. An important cross section at E(c. m.)=300 keV can be investigated in more precisely based on this data. And some theoretical predictions were excluded.

Research Products

• [Journal Article] Low-background prebunching system for heavy-ion beams at the Tokai radioactive ion accelerator complex (2012)
  • Author(s): M. Okada, K. Niki, Y. Hirayama, N. Imai, H. Ishiyama, S. C. Jeong, I. Katayama, H. Miyatake, M. Oyaizu, Y. X. Watanabe, S. Arai, H. Makii, Y. Wakabayashi
  • Journal Title: Phys. Rev. STAB Volume: 15 Pages: 030101, 10
  • Peer Reviewed
• [Journal Article] Adhesion improvement of HIVIPP 12^<C> targets on Au backings (2011)
  • Author(s): I. Sugai, Y. Takeda, H. Kawakami, N. Ohta, H. Makii, H. Miyatake
  • Journal Title: Nucl. Instrum. Meth. A Volume: 685 Pages: 24-33
  • Peer Reviewed
• [Journal Article] Development of the GEM-MSTPC for measurements of low-energy nuclear reactions (2010)
  • Author(s): K. Yamaguchi, H. Ishiyama, Y. X. Watanabe, H. Miyatake, Y. Hirayama, N. Imai, H. Makii, Y. Fuchi, S. C. Jeong, T. Nomura, Y. Mizoi, S. K. Das, T. Fukuda, T. Hashimoto, I, Arai
  • Journal Title: Nucl. Instrum. Meth Volume: A623 Pages: 135-137
  • Peer Reviewed
• [Journal Article] A new measurement of the astrophysical L^8i(d, t)^7Li reaction (2009)
  • Author(s): T. Hashimoto, H. Ishiyama, Y. X. Watanabe, Y. Hirayama, N. Imai, H. Miyatake, S. C. Jeong, M.-H. Tanaka, N. Yoshikawa, T. Nomura, S. Mitsuoka, K. Nishio, T. K. Sato, A. Osa, S. Ichikawa, M. Matsuda, H. Ikezoe, S. K. Das, Y. Mizoi, T. Fukuda, A. Sato, T. Shimoda, K. Otsuki, T. Kajino
  • Journal Title: Phys. Lett Volume: B674 Pages: 276-280
  • Peer Reviewed
• [Journal Article] E1 and E2 cross sections of the^<12> C(α,γ_0)^<16> O reaction using pulsedαbeams (2009)
  • Author(s): H. Makii, Y. Nagai, T. Shima, M. Segawa, K. Mishima, H. Ueda, M. Igashira, and T. Ohsaki
  • Journal Title: Phys. Rev. C Volume: 80 Pages: 065802-1-16
  • Peer Reviewed
• [Presentation] Measurement of the C^^<12>(α,γ)^<16> O reaction at TRIAC (2011)
  • Author(s): H. Makii, H. Miyatake, Y. Wakabayashi, H. Ishiyama, K. Niki, M. Okada, N. Imai, Y. X. Watanabe, Y. Hirayama, S. C. Jeong, T. Shima, I. Nishinaka, S. Mitsuoka, K. Nishio and S. Chiba
  • Organizer: 11th Int. Symp. on Origin of Matter and Evolution of Galaxies
  • Place of Presentation: Wako Japan
  • Year and Date: 2011-11-17
• [Presentation] A new approach for next TRIAC(invited talk) (2010)
  • Author(s): H. Miyatake
  • Organizer: The 2nd ANPhA Symposium-Rare Isotope Accelerator Facility : KoRIA-
  • Place of Presentation: Sungkyunkwan University, Seoul, Korea
  • Year and Date: 20101001-02
• [Presentation] BEAM TEST OF SAWTOOTH-WAVE PRE-BUNCHER COUPLED TO A MULTILAYER CHOPPER (2010)
  • Author(s): M. Okada, H. Ishiyama, I. Katayama, K. Niki, H. Miyatake, Y. X. Watanabe, H. Makii, S. Arai
  • Organizer: 1st International Particle Accelerator Conference(IPAC' 10)
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 20100523-28
• [Presentation] Tokai Radioactive Ion Accelerator Complex(TRIAC): present and future (2009)
  • Author(s): S. C. Jeong
  • Organizer: TRIAC collaboration, International Symposium on Exotic Nuclei(EXON2009)
  • Place of Presentation: Sochi, Russia(Invited talk)
  • Year and Date: 20090928-1002
• [Presentation] 12C(α,γ)実験の準備状況について (2008)
  • Author(s): 宮武宇也
  • Organizer: 第5回停止・低速不安定核ビームを用いた核分光研究会
  • Place of Presentation: 大阪
  • Year and Date: 20081224-25
• [Remarks] (1)ホームページ等
  • URL: http://kekrnb.kek.jp/
• [Remarks] (2) KEK技術賞の受賞岡田雅之、「2ギャップバンチャーを用いた鋸歯状波電圧による新バンチング技術の開発」、2011年3月8日KEK広報ページKEK技術賞の受賞
  • URL: http://legacy.kek.jp/ja/news/topics/2011/11gijutsusho.html