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Article type: Cover
2000 Volume 102 Issue 2 Pages
Cover1-
Published: November 20, 2000
Released on J-STAGE: October 02, 2017
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Article type: Appendix
2000 Volume 102 Issue 2 Pages
App1-
Published: November 20, 2000
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Article type: Appendix
2000 Volume 102 Issue 2 Pages
B1-
Published: November 20, 2000
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Article type: Appendix
2000 Volume 102 Issue 2 Pages
B2-B4
Published: November 20, 2000
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M. Ito, Y. Sakuragi
Article type: Article
2000 Volume 102 Issue 2 Pages
B5-B9
Published: November 20, 2000
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In the present paper, we have performed the coupled-channel calculation of the ^6He+^6He scattering at low energies by taking into account the soft-dipole and quadrupole excitation modes of the colliding ^6He nuclei in the extended Goldhaber-Teller model. The inter-nucleus interactions, both the diagonal and coupling ones, are calculated by the double-folding model with the use of the density-dependent M3Y NN interaction and ^6He densities calculated from the α+n+n cluster model. The transition densities for the soft-mode excitations are calculated based on the extended Goldhaber-Teller model assuming the virtual 1^- and 2^+ states representing the soft-mode excitations of ^6He. The coupled-channel calculation predicts many resonance states in the energy range where the resonances were observed in the ^<12>Be → ^6He+^6He breakup experiment and that the energies and spins of the calculated resonances well agree with the experimental observations. The calculated resonances are found to be the members of different kinds of molecular rotational bands which are generated by the crossing and coupling among the molecular bands in the elastic and inelastic channels. Thus, the soft-mode excitations of ^6He plays an essential role in the resonance formation.
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Tamanna Rumin, Noboru Takigawa
Article type: Article
2000 Volume 102 Issue 2 Pages
B10-B14
Published: November 20, 2000
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We discuss the prediction of the effect of the difference between the charge and matter deformations on heavy-ion fusion reactions induced by proton rich and neutron rich unstable nuclei. We also show that the effect of the different deformations are opposite to each other for proton rich and neutron rich nuclei. We analyze the fusion reaction of ^<19>Na + ^<208>Pb and ^<37>Na + ^<208> Pb at sub-barrier energies.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B15-B19
Published: November 20, 2000
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B. Abu-Ibrahim, Y. Suzuki
Article type: Article
2000 Volume 102 Issue 2 Pages
B20-B28
Published: November 20, 2000
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A method for calculating the complete expansion of the Glauber amplitude is proposed. A calculation of the complete Glauber amplitude is performed by using wave functions for ^4He and ^6He projectiles, leading to the reaction and elastic differential cross sections in good agreement with experiment. By relating the N-^<12>C profile function to the NN profile function, we derive a new, simple formula to calculate reaction cross sections which requires only nuclear densities as an input.
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K. Kaki
Article type: Article
2000 Volume 102 Issue 2 Pages
B29-B33
Published: November 20, 2000
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We study theoretically how we can determine the neutron density distributions of unstable nuclei from proton elastic scattering. We apply the relativistic impulse model to study the sensitivities of the observables to the density distributions which are expressed in Woods-Saxon form. We have already found that the both radius and diffuseness parameters of Woods-Saxon form for neutron densities could be determined from elastic scattering data; the reaction cross sections and the dip positions of differential cross sections. Since the spin-orbit potential is known to vary sharply at the nuclear surface, spin observables are expected to give the information on the behavior of nuclear surface. In this paper, we try to determine the parameters with the reaction cross sections and the dip positions of analyzing powers. As in the previous work, target nuclear proton density is provided by the relativistic mean-field theory (RMFT) which has been extended to be applied to deformed nuclei.
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B34-B38
Published: November 20, 2000
Released on J-STAGE: October 02, 2017
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Y. Iwata, K. Ieki, A. Galonsky, J.J. Kruse, J. Wang, P.D. Zecher, F. D ...
Article type: Article
2000 Volume 102 Issue 2 Pages
B39-B43
Published: November 20, 2000
Released on J-STAGE: October 02, 2017
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We have performed kinematically complete measurements of Coulomb dissociation of 24A MeV ^8He into ^6He and two neutrons. Momenta of incident beam particles and outgoing decay products from the ^8He dissociation were measured in coincidence. The two neutron removal cross sections were extracted from inclusive (^6He+n+X) and exclusive (^6He+2n) data sets. The cross sections from the two data sets differ by a factor of two. This discrepancy can be understood with an assumption of the sequential decay property in the ^8He dissociation. This assumption was further verified with the relative energy distribution of the ^6He+n system. The excitation energy of the ^8He can be reconstructed. The excitation spectrum for a Pb target shows broad structure indicating the E1 continuum state as observed in measurements of the other halo nuclei. The photonuclear cross section σ_<E1> and the dipole strength function dB(E1)/dE_d were deduced for the first time.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B44-B48
Published: November 20, 2000
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[in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B49-B53
Published: November 20, 2000
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[in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B54-B58
Published: November 20, 2000
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B59-B60
Published: November 20, 2000
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[in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B61-B65
Published: November 20, 2000
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[in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B66-B70
Published: November 20, 2000
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B71-B75
Published: November 20, 2000
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[in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B76-B80
Published: November 20, 2000
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[in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B81-B85
Published: November 20, 2000
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[in Japanese], [in Japanese], [in Japanese], Kalman Varga
Article type: Article
2000 Volume 102 Issue 2 Pages
B86-B92
Published: November 20, 2000
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[in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
B93-
Published: November 20, 2000
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Hiroshi MASUI, Shigeyoshi AOYAMA, Takayuki MYO, Kiyoshi KATO, Kiyomi I ...
Article type: Article
2000 Volume 102 Issue 2 Pages
B94-B98
Published: November 20, 2000
Released on J-STAGE: October 02, 2017
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We study resonant structures of unstable nuclei with a new calculational method, the Jost function method (JFM). In JFM, bound, scattering and resonant states are obtained within an unified way. We show that partial decay widths in coupled-channel systems can be obtained by using JFM. Further, JFM has an ability to solve virtual states. As a practical example, we study virtual states in ^5He and ^<10>Li with the core+n model.
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Article type: Appendix
2000 Volume 102 Issue 2 Pages
B99-
Published: November 20, 2000
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Article type: Appendix
2000 Volume 102 Issue 2 Pages
B100-
Published: November 20, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 102 Issue 2 Pages
1-22
Published: November 20, 2000
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Article type: Appendix
2000 Volume 102 Issue 2 Pages
App2-
Published: November 20, 2000
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Article type: Appendix
2000 Volume 102 Issue 2 Pages
App3-
Published: November 20, 2000
Released on J-STAGE: October 02, 2017
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Article type: Cover
2000 Volume 102 Issue 2 Pages
Cover2-
Published: November 20, 2000
Released on J-STAGE: October 02, 2017
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Article type: Cover
2000 Volume 102 Issue 2 Pages
Cover3-
Published: November 20, 2000
Released on J-STAGE: October 02, 2017
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