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大強度ハドロン加速器による核物理研究

Research Project

Project/Area Number 02302016
Research Category

Grant-in-Aid for Co-operative Research (A)

Allocation TypeSingle-year Grants
Research Field 核・宇宙線・素粒子
Research InstitutionThe University of Tokyo

Principal Investigator

野村 亨  東京大学, 原子核研究所, 教授 (60087393)

Co-Investigator(Kenkyū-buntansha) 藤岡 学  東北大学, サイクロトロンラジオアイソトープセンター, 教授 (70016111)
高塚 龍之  岩手大学, 人文社会科, 教授 (50043427)
大沼 甫  東京工業大学, 理学部, 教授 (00011544)
池上 栄胤  大阪大学, 核物理研究センター, センター長 (00016031)
山崎 敏光  東京大学, 原子核研究所, 所長 (80011500)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥7,200,000 (Direct Cost: ¥7,200,000)
Fiscal Year 1991: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1990: ¥3,900,000 (Direct Cost: ¥3,900,000)
Keywordsストレンジネス核物理 / ハイパ-核 / H粒子 / パイ中間子吸収 / エキゾティック原子 / 中性子過剰核 / 天体熱核反応 / 非一様ビッグバン模型 / ダブルハイパ-核 / 不安定核ビ-ム / 天体核物理 / 超重元素 / 大強度陽子リニアック
Research Abstract

下記に示す主要研究課題について作業グル-プを前年度にひき続き組織し,研究分担者等の研究成果を随時レビュ-し,具体的な研究遂行に反映させた。その上で,全体会議を開催し,相互批判による総合的検討を加え、今後の研究指針を策定した。その結果は,近く印刷・公表する。主要研究課題と主な成果について以下に記す。
(A)ストレンジネス核物理
[i]ハイパ-核の偏極と弱崩壊…(π^+,K^+)反応によって生成したラムダハイパ-核がスピン偏極していることが実験的に確認された。これは世界最初の観測である。
[ii]ダブルハイパ-核とH粒子の探索
(B)基本相互作用
[i]1GeV/Cパイ中間子吸収の系統的測定の成功と△状態の役割。
[ii]エキゾティック原子の研究…反陽子をヘリウムの気体・液体に照射して反陽子原子を生成すると,極めて長時間存続することが世界ではじめて観測された。
(C)不安定核ビ-ムによる核物理・天体核物理
[i]中性子過剰核のソフト巨大共鳴の発見。
[ii]不安定核の天体熱核反応率のク-ロン分解反応法による最初の実験の成功。
[iii]原始宇宙における重元素合成反応と非一様ビッグバン模型の進展。
(D)測定器・加速器
[i]大強度陽子リニアックの開発研究が成功裡に発展した。
[ii]不安定核加速に適した重イオンリニアックの開発に成功した。
[iii]大効率超伝導スペクトロメ-タの完成。
[iv]気体充視填反跳核分析器の改造。

Report

(2 results)
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] T.Nomura: "Exotic nuclei arena in JHP" Nuclear Instruments and Methods in Physics Research B. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Yamazaki: "NUCLEI WITH EXOTIC CONSTITUENTS" Nuclear Physics A. A522. 335C-350C (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Y.Nagai: "MEASUREMENT OF THE NEUTRON CAPTURE RATE OF THE ^<12>C(n,γ)^<13>C REACTION AT STELLAR ENERGY" The Astrophysical Journal. 372. 683-687 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Y.Nakai: "Inーplane polarization transfer in the ^6Li(p,p') reaction and the effective NN interaction" Physical Review C. 45. 451-454 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Motobayashi: "Dtermination of the Astrophysical ^<13>N(P,γ)^<14>O Cross Section through the Coulomb Dissociation Method" Physics Letters B. 264B. 259-262 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Nomura: "ISOL Based Radioactive Nuclear Beam Facilities" Nuclear Physics C. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Nomura: "The RikenーGasーFilled Recoil Separator and A Possible New Approach to Superheavy Elements by the (HI,αxn) Reaction" INS Rep.849. 1-10 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Y.Nagai: "Branching Ratio for ^<12>C Superallowed Fermi βーDecay" Physical Review. C43. R9-R11 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Yamazaki: "PionーTransfer Reaction Spectroscopy of Inverse Kinematics for studies of Deeply Bound Pionic Atoms in Heavy Nuclei" Nucl.Instr.Meth.A292. 619-628 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] H.Toki: "Sensitivity of Deeply bound pionic atoms on the neutron skin" Physical Letters. 249. 391-395 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] H.Ikegami: "Cyclotron Maser Colling if Electron and Ion Beams" Physical Review Letters. 64. 1737-2593 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Matsuta: "NMR on ShortーLived BetaーEmitter ^<43>Ti using New Fragment Separator at LBL" Hyperfine Interactions. 61. 1387-1390 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] I.Tanihata: "Neutron Halos and exotic fragments" Nuclear Physics. A520. 411C-425C (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Y.Fujita: "New highーspin streched states in ^<208>Pb observed by the (p,p′) reaction" Physical Letters. B247. 219-222 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Takatsuka: "Effect of Pion Condonsation of Keplerian Angular Frequency of Rotating Neutron STars" Prog.Theor.Phys.85. 175 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Takatsuka: "SpinーUp of Hot Neutron STars Jush Born by the Subsequent Cooling" Prog.Theor.Phys.85. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Y.R.Shimizu: "Inertia of Superdefound Band" Physical Review. C41. 1861-1864 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Ieki: "Density dependent interaction applied to lowーmultipole (p,p′) and (p,n) transitions in light nuclei" Physical Review. C42. 457-460 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Nakano: "Depolarization in pー ^<15>N Elastic Scattering and Large Teusor SpinーSpin Lateraction" Phys.Lett.B240. 301-305 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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