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Article type: Cover
1993 Volume 87 Issue 4 Pages
Cover1-
Published: July 20, 1993
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Article type: Appendix
1993 Volume 87 Issue 4 Pages
App1-
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Article type: Appendix
1993 Volume 87 Issue 4 Pages
D1-D2
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H. Sagawa
Article type: Article
1993 Volume 87 Issue 4 Pages
D3-
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Muneharu Yokoyama
Article type: Article
1993 Volume 87 Issue 4 Pages
D4-D9
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The quadrupole giant resonances in the Ca isotopes have been investigated in terms of the Hartree-Fock calculations and the Tamm-Dancoff approximations. It has been seen in the nuclei with neutron skin that the energies of the isoscalar peaks increase with compared to that of the stable nuclei, and that the neutron-mode excitations lie below the main isoscalar excitations. The TDA calculation has the shortcoming that it has no ground state correlations taken into account, and the handling of the particle state wave functions with positive energies are not sufficient, more sophisticated method (continuum RPA, for example) must be done for the future investigations, but an overview of the characteristics of the nucleus with neutron skin has been seen.
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[in Japanese]
Article type: Article
1993 Volume 87 Issue 4 Pages
D10-D15
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[in Japanese], [in Japanese]
Article type: Article
1993 Volume 87 Issue 4 Pages
D16-D19
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[in Japanese]
Article type: Article
1993 Volume 87 Issue 4 Pages
D20-D22
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1993 Volume 87 Issue 4 Pages
D23-D29
Published: July 20, 1993
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We have applied the method of Antisymmetrized version of Molecular Dynamics(AMD) to the study of the nuclear structures. First we mention about a application to the study of the structure change along the ylast line in ^<20>Ne system. And we report the systematically study of the structures of Li, Be and B isotopes with AMD and show excellent reproduction of the magnetic dipole moments for odd-even nuclei of Li and B isotopes. Furthermore we extended the AMD method and applied. The calculation results show the probability of various interesting cluster structures in light neutron-rich nuclei.
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Article type: Article
1993 Volume 87 Issue 4 Pages
D30-D32
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Article type: Article
1993 Volume 87 Issue 4 Pages
D33-D36
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Toshitaka Kajino
Article type: Article
1993 Volume 87 Issue 4 Pages
D37-D52
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Nucleosyntheses of the light elements in primeval big-bang and cosmic rays take the important keys to understand the origin of the light elements and their chemical evolution. They constrain the universal mass density parameter Ω and the dark matter problem. In this paper we discussed the present status of the observed primordial abundances of the light elements, Be and B discovered recently in population II halo dwarfs, and the relevant nuclear physics involved in the evolution of the early Universe and early galaxy. As to the primordial nucleosynthesis, the standard homogeneous model is a reasonable model which explains the light element abundances, although there are still many uncertainties of the observed "primordial" abundances. Having found heavy elements in almost all aged stars ever known, however, non-standard models including inhomogeneous model also are the possible models which may explain these abundances if they are proved to be cosmological in future astronomical observations. Adopted a strong baryon inhomogeneity as suggested from the first order QCD phase transition, the inhomogeneous nucleosynthesis models result in largely enhanced primordial abundances of heavy elements 12 ≤ A via the production of radioactive unstable nuclei.
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[in Japanese]
Article type: Article
1993 Volume 87 Issue 4 Pages
D53-D59
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Article type: Article
1993 Volume 87 Issue 4 Pages
D60-D65
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Article type: Article
1993 Volume 87 Issue 4 Pages
D66-D69
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M. Kawai
Article type: Article
1993 Volume 87 Issue 4 Pages
D70-D75
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The effective Hamiltonian for the 3-body model of ^<11>Li is examined allowing for the excitation of the ^9Li core. It is suggested that the 3-body potential due to excitation of the core may be important if the one-body potentials of the neutron - core interaction used in the model are appreciably different from the folding potential. The argument applies to any bound state of a system consisting of two particles and an excitable core. A coupled channel 3- body model is suggested for a system with a finite number of excited states of the core which can be strongly excited by the valence particles.
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Article type: Article
1993 Volume 87 Issue 4 Pages
D76-D84
Published: July 20, 1993
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1993 Volume 87 Issue 4 Pages
D85-D86
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Article type: Article
1993 Volume 87 Issue 4 Pages
D87-D89
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1993 Volume 87 Issue 4 Pages
D90-D95
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Article type: Article
1993 Volume 87 Issue 4 Pages
D96-D100
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N. Takigawa, M. Kuratani, H. Sagawa
Article type: Article
1993 Volume 87 Issue 4 Pages
D101-D105
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We discuss the effect of breakup on heavy-ion fusion reactions induced by a halo nucleus ^<11>Li based on a semi-classical method. Our formula leads to a smaller effect of breakup than that calculated in a recent paper using unitarity. We show that although the large enhancement of the fusion cross section is moderated by the breakup, the halo nucleus ^<11>Li still leads to a larger fusion cross section than the other Li isotopes. This trend is especially significant at low energies, but occurs also at energies near the Coulomb barrier where experimental study is presently feasible.
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Article type: Article
1993 Volume 87 Issue 4 Pages
D106-D111
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Article type: Article
1993 Volume 87 Issue 4 Pages
D112-D116
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Article type: Article
1993 Volume 87 Issue 4 Pages
D117-D121
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Article type: Article
1993 Volume 87 Issue 4 Pages
D122-D130
Published: July 20, 1993
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Akira Ohnishi, Toshiki Maruyama, Akira Ono, Hisashi Horiuchi
Article type: Article
1993 Volume 87 Issue 4 Pages
D131-D139
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Article type: Article
1993 Volume 87 Issue 4 Pages
D140-D145
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Article type: Article
1993 Volume 87 Issue 4 Pages
D146-D148
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Article type: Article
1993 Volume 87 Issue 4 Pages
165-174
Published: July 20, 1993
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Article type: Appendix
1993 Volume 87 Issue 4 Pages
App2-
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Article type: Appendix
1993 Volume 87 Issue 4 Pages
App3-
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Article type: Cover
1993 Volume 87 Issue 4 Pages
Cover2-
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Article type: Cover
1993 Volume 87 Issue 4 Pages
Cover3-
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