1993 Fiscal Year Annual Research Report

核反応による原子核の動的性質の研究

Research Project

Project/Area Number	04302016
Research Institution	Tokyo Metropolitan University
Principal Investigator	久保謙一東京都立大学, 理学部, 教授 (50013389)
Co-Investigator(Kenkyū-buntansha)	赤石義紀東京大学, 核研, 教授 (50001839) 市村宗武東京大学, 教養学部, 教授 (10012436) 阿部恭久京都大学, 基研, 助教授 (80000868) 谷藤〓法政大学, 教養部, 教授 (30060974) 河合光路九州大学, 理学部, 教授 (40016027)
Keywords	原子核反応 / 核反応ダイナミクス / スピン偏極 / ハドロン物理 / 不安定核 / 核融合・分裂 / 軽・重イオン核反応 / ストレンジネス核物理
Research Abstract	平成4年度に行なってきた各分担課題の研究を継続し、課題分担者間の研究交流をより盛んにした。原子核に現象として現れる種々の動力学性の特徴を、一般的、普遍的な性質としてとらえる努力を行なった。一方で、実験的に確かめられる事柄を整理して実験を提案した。これからの原子核の動的性質の研究についての討論・議論を進めた。世界的にみても、不安定核を用いた核反応(Radiative beam inject nuc lear reactions)は、益々要なテーマとなってきている。核子移行反応により生成される核のスピンが、ほぼ100%偏極しているものがあることが理論的に指摘されており、実験的検証を提案した。この予見が確立されれば、これを入射核として用いた実驗を提案する。我が国では理研において既にこの種の実験が行なわれている。また、200GeV/cのスピン偏極した陽子-陽子衝突における生成ハドロン角度分布の左右非対称性が観測されているが、この結果を相対論的基礎方程式から出発して理論的に再現出来た。この反応をクォーク移行反応であるとして取り扱い、非対称性の出現する動力学を調べたところ、先の核子移行反応と同じく、移行するクォークに作用するスピン軌道力が決定的な役割を果たしていることが分かった点は興味深い。天体核反応・宇宙物理学への貢献も行なわれた。高精度の大次元殻模型計算により、高温高密度物質中におけるベータ崩壊の遷移強度分布を系統的に調べた。これは天体核現象のシミュレションに役立つものである。準弾性陽子-原子核散乱のスピン-アイソスピン応答関数に、デルタ-ホール配位の効果を取り入れた精度の高い計算が行なわれ、電子散乱の結果との比較が行なわれた。

Research Products

(41 results)

All Other

All Publications (41 results)

[Publications] Y.Yamamoto: "Reaction mechanism of ^7Li(^3He,p)^9Be and ^7Li(^3H,n)^9Be and primordial nucleosynthesis of ^9Be" Phys.Rev.C. 47. 846-859 (1993)
[Publications] Y.Yamamoto: "Enormous spin polarization in heavy-ion-induced one-nucleon transfer reactions" Phys.Rev.C. 49. 360-371 (1994)
[Publications] Y.wWtanabe: "A semiclassical destorted-wave model analysis of one-step process in proton inelastic acattering to continuum" Nucl.Phys.A. 560. 43-56 (1993)
[Publications] Y.Kino: "Non-adiabatic calculation of muonic atom-nucleus collisions" Hyperfine Interactions. (in press). (1994)
[Publications] Y.Kino: "Isotope dependence of particle-decay.rates of muonic molecular ions (d^3Hemu)and(d^4Hemu)" Hyperfine Interactions. (in press). (1994)
[Publications] M.Tanifuji: "Supplemental remarks on spin-dependent interactions in elastic scattering of deuterons at intermediate energies" Bull.Fac.Lib.Arts,Hosei Univ.88. 21-34 (1994)
[Publications] Y.Yamashita: "Finite-range DWBA analysis of(p,alpha)reaction below the Coulomb barrier" Prog.Theor.Phys.90. 1303-1310 (1993)
[Publications] Y.Sakuragi: "Sudden approximation for elastic scattering of composite projectiles at intermediate energies" Nucl.Phys.A. 560. 945-972 (1993)
[Publications] Y.Hirabayashi: "Single-folding interaction in scattering of ^6Li and ^7Li from nuclei" Phys.Lett.B. 318. 32-38 (1993)
[Publications] E.Uzu: "Analysis of ^2H(〓,p)^3H reaction at 30-90 keV by four-body Faddeev-Yakubovsky equaton" Prog.Theor.Phys.90. 937-942 (1993)
[Publications] T.Kajihara: "The(p,alpha)reaction (I).The left-right asymmetry,the j-dependence and the cross-section magnitude" Nucl.Phys.A. 568. 499-522 (1994)
[Publications] K.Jedamzik: "Enhanced heavy-element production in baryon-inhomogeneous big-bang models" Astrophys.J.422. 423-429 (1994)
[Publications] S.Oryu: "Effects of the three-body force in three-nucleon systems" Phys.Rev.C. (in press). (1994)
[Publications] K.Kato: "Analysis of ^9Li+n resonances in ^<10>Li by complex scaling method" Prog.Theor.Phys.89. 623-637 (1993)
[Publications] M.Teshigawara: "The complex scaled Siegert method in a harmonic oscillator representation" Prog.Theor.Phys.(in press).
[Publications] A.Ono: "Momentum distribution of fragments in heavy-ion reactions:dependence on the stochastic collision process" Phys.Rev.C. 47. 2652-2660 (1993)
[Publications] Y.Nara: "Pauli-blocking and nuclear potential effects in the Glauber model" Proceedings of International shcool-seminar '93 Hadorns and Nuclei from QCD,World Scientific.
[Publications] A.Ohnish: "Statistical properties of anti-symmetrized molec lar dynamics" Nucl.Phys.A. 565. 474-494 (1993)
[Publications] D.Bolley: "Nuclear fission with a Langevin equation" Nucl.Phys.A. 556. 67-87 (1993)
[Publications] T.Wada: "One-body dissipation in agreement with prescissior neutrons and fragment kinetic energies" Phys.Rev.Lett.70. 3538-3541 (1993)
[Publications] E.Uegaki: "A molecular model for high-spin heavy-ion resonances" Prog.Theor.Phys.90. 615-663 (1993)
[Publications] S.Yamaji: "Isoscalar monopole vibrations around thermal equilibrium" RIKEN Accelerator Progress Reprot22GD22:27. 12-12 (1993)
[Publications] A.Itabashi: "Quasi-elastic d(〓,〓)2p reaction and spin response functions of the deuterron" Prog.Theor.Phys.91. 69-83 (1994)
[Publications] S.Yasumoto: "The elastic charge distribution of the Lambda particle" Prog.Theor.Phys.90. 427-434 (1993)
[Publications] S.Kinapara: "Relativistic calculation of two-body correlations in finite nuclei" Prog.Theor.Phys.91. (1994)
[Publications] T.Kohmura: "Relativistic description of nuclei,the wave packet expansion method" Proceeding of 6th Franco-Japanese Colloquium,Nuclear Structure and Interdisciplinary Topics. 410-420 (1993)
[Publications] T.Kajiyama: "Walecka mean-field model for finite nuclei and time dependent promlems" Nucl.Phys.(in press).
[Publications] K.Tamura: "Electromagnetic form factors on few-body systems" RCNP Annual Reprt 1992. 115-118 (1992)
[Publications] I.Kumagai: "Pionic decay of hapernucleus ^5_〓He" Phys.Rev.C. (in press). (1994)
[Publications] Y.Akaishi: "Double strangeness hypernuclei" Proceedings of Recent Topics on Nuclear Physics. 157-162 (1993)
[Publications] S.Nakamura: "Charge-symmetry-breaking nucleon-nucleon in the lsOd-shell nuclei" Phys.Lett.B. 311. 15-18 (1993)
[Publications] T.Oda: "Rate tables for the weax processes of sd-shell nuclei" ATOMIC DATA AND NUCLEAR DATA TABLES. 56(in press). (1994)
[Publications] M.Hirsch: "Nuclear structure calculation of beta^+beta^+,beta^+/EC and EC/EC decay matrix elements" Z.Phys.A. (in press). (1994)
[Publications] S.Kubono: "Proton-rich sd-shell nuclei for astrophysical interest" Nucl.Phys.A. 553. 481-484 (1993)
[Publications] T.Kajino: "Quantum tunneling of quarks in cosmological quark-hadron phase transition" J.J.Appl.Phys.9. 168-171 (1993)
[Publications] Y.Fujiwara: "Reaction cross sections in the ten-nucleon system" Few Body Systems. (1994)
[Publications] Y.Fujiwara: "Multiconfiguration resonating-group study of nuclear reaction mechanisms" Prog.Theor.Phys.91. (1994)
[Publications] Y.Fujiwara: "Multicluster resonating-group method of s-shell cluster" 京都大学理学部紀要. (1994)
[Publications] Y.Suzuki: "Fragmentation cross section of He isotopes and neutron correlations" Nucl.Phys.(in press).
[Publications] Y.Ogawa: "Momentum distributions of ^9Li fragment arising from(^<11>Li,^9Li)reaction and neutron correlations" Nucl.Phys.(in press).
[Publications] N.Fukunishi: "Neutron-skin and proton-skin formations in exotic nuclei far from stability" Phys.Rev.C. 48. 1648-1655 (1993)

1993 Fiscal Year Annual Research Report

核反応による原子核の動的性質の研究

Principal Investigator

久保 謙一 東京都立大学, 理学部, 教授 (50013389)

Research Products

[Publications] Y.Yamamoto: "Reaction mechanism of ^7Li(^3He,p)^9Be and ^7Li(^3H,n)^9Be and primordial nucleosynthesis of ^9Be" Phys.Rev.C. 47. 846-859 (1993)

[Publications] Y.Yamamoto: "Enormous spin polarization in heavy-ion-induced one-nucleon transfer reactions" Phys.Rev.C. 49. 360-371 (1994)

[Publications] Y.wWtanabe: "A semiclassical destorted-wave model analysis of one-step process in proton inelastic acattering to continuum" Nucl.Phys.A. 560. 43-56 (1993)

[Publications] Y.Kino: "Non-adiabatic calculation of muonic atom-nucleus collisions" Hyperfine Interactions. (in press). (1994)

[Publications] Y.Kino: "Isotope dependence of particle-decay.rates of muonic molecular ions (d^3Hemu)and(d^4Hemu)" Hyperfine Interactions. (in press). (1994)

[Publications] M.Tanifuji: "Supplemental remarks on spin-dependent interactions in elastic scattering of deuterons at intermediate energies" Bull.Fac.Lib.Arts,Hosei Univ.88. 21-34 (1994)

[Publications] Y.Yamashita: "Finite-range DWBA analysis of(p,alpha)reaction below the Coulomb barrier" Prog.Theor.Phys.90. 1303-1310 (1993)

[Publications] Y.Sakuragi: "Sudden approximation for elastic scattering of composite projectiles at intermediate energies" Nucl.Phys.A. 560. 945-972 (1993)

[Publications] Y.Hirabayashi: "Single-folding interaction in scattering of ^6Li and ^7Li from nuclei" Phys.Lett.B. 318. 32-38 (1993)

[Publications] E.Uzu: "Analysis of ^2H(〓,p)^3H reaction at 30-90 keV by four-body Faddeev-Yakubovsky equaton" Prog.Theor.Phys.90. 937-942 (1993)

[Publications] T.Kajihara: "The(p,alpha)reaction (I).The left-right asymmetry,the j-dependence and the cross-section magnitude" Nucl.Phys.A. 568. 499-522 (1994)

[Publications] K.Jedamzik: "Enhanced heavy-element production in baryon-inhomogeneous big-bang models" Astrophys.J.422. 423-429 (1994)

[Publications] S.Oryu: "Effects of the three-body force in three-nucleon systems" Phys.Rev.C. (in press). (1994)

[Publications] K.Kato: "Analysis of ^9Li+n resonances in ^<10>Li by complex scaling method" Prog.Theor.Phys.89. 623-637 (1993)

[Publications] M.Teshigawara: "The complex scaled Siegert method in a harmonic oscillator representation" Prog.Theor.Phys.(in press).

[Publications] A.Ono: "Momentum distribution of fragments in heavy-ion reactions:dependence on the stochastic collision process" Phys.Rev.C. 47. 2652-2660 (1993)

[Publications] Y.Nara: "Pauli-blocking and nuclear potential effects in the Glauber model" Proceedings of International shcool-seminar '93 Hadorns and Nuclei from QCD,World Scientific.

[Publications] A.Ohnish: "Statistical properties of anti-symmetrized molec lar dynamics" Nucl.Phys.A. 565. 474-494 (1993)

[Publications] D.Bolley: "Nuclear fission with a Langevin equation" Nucl.Phys.A. 556. 67-87 (1993)

[Publications] T.Wada: "One-body dissipation in agreement with prescissior neutrons and fragment kinetic energies" Phys.Rev.Lett.70. 3538-3541 (1993)

[Publications] E.Uegaki: "A molecular model for high-spin heavy-ion resonances" Prog.Theor.Phys.90. 615-663 (1993)

[Publications] S.Yamaji: "Isoscalar monopole vibrations around thermal equilibrium" RIKEN Accelerator Progress Reprot22GD22:27. 12-12 (1993)

[Publications] A.Itabashi: "Quasi-elastic d(〓,〓)2p reaction and spin response functions of the deuterron" Prog.Theor.Phys.91. 69-83 (1994)

[Publications] S.Yasumoto: "The elastic charge distribution of the Lambda particle" Prog.Theor.Phys.90. 427-434 (1993)

[Publications] S.Kinapara: "Relativistic calculation of two-body correlations in finite nuclei" Prog.Theor.Phys.91. (1994)

[Publications] T.Kohmura: "Relativistic description of nuclei,the wave packet expansion method" Proceeding of 6th Franco-Japanese Colloquium,Nuclear Structure and Interdisciplinary Topics. 410-420 (1993)

[Publications] T.Kajiyama: "Walecka mean-field model for finite nuclei and time dependent promlems" Nucl.Phys.(in press).

[Publications] K.Tamura: "Electromagnetic form factors on few-body systems" RCNP Annual Reprt 1992. 115-118 (1992)

[Publications] I.Kumagai: "Pionic decay of hapernucleus ^5_〓He" Phys.Rev.C. (in press). (1994)

[Publications] Y.Akaishi: "Double strangeness hypernuclei" Proceedings of Recent Topics on Nuclear Physics. 157-162 (1993)

[Publications] S.Nakamura: "Charge-symmetry-breaking nucleon-nucleon in the lsOd-shell nuclei" Phys.Lett.B. 311. 15-18 (1993)

[Publications] T.Oda: "Rate tables for the weax processes of sd-shell nuclei" ATOMIC DATA AND NUCLEAR DATA TABLES. 56(in press). (1994)

[Publications] M.Hirsch: "Nuclear structure calculation of beta^+beta^+,beta^+/EC and EC/EC decay matrix elements" Z.Phys.A. (in press). (1994)

[Publications] S.Kubono: "Proton-rich sd-shell nuclei for astrophysical interest" Nucl.Phys.A. 553. 481-484 (1993)

[Publications] T.Kajino: "Quantum tunneling of quarks in cosmological quark-hadron phase transition" J.J.Appl.Phys.9. 168-171 (1993)

[Publications] Y.Fujiwara: "Reaction cross sections in the ten-nucleon system" Few Body Systems. (1994)

[Publications] Y.Fujiwara: "Multiconfiguration resonating-group study of nuclear reaction mechanisms" Prog.Theor.Phys.91. (1994)

[Publications] Y.Fujiwara: "Multicluster resonating-group method of s-shell cluster" 京都大学理学部紀要. (1994)

[Publications] Y.Suzuki: "Fragmentation cross section of He isotopes and neutron correlations" Nucl.Phys.(in press).

[Publications] Y.Ogawa: "Momentum distributions of ^9Li fragment arising from(^<11>Li,^9Li)reaction and neutron correlations" Nucl.Phys.(in press).

[Publications] N.Fukunishi: "Neutron-skin and proton-skin formations in exotic nuclei far from stability" Phys.Rev.C. 48. 1648-1655 (1993)

久保謙一東京都立大学, 理学部, 教授 (50013389)