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Article type: Cover
1999 Volume 99 Issue 3 Pages
Cover1-
Published: June 20, 1999
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Article type: Appendix
1999 Volume 99 Issue 3 Pages
App1-
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Article type: Appendix
1999 Volume 99 Issue 3 Pages
C1-
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C2-
Published: June 20, 1999
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Yu-xin Liu, Fumihiko Sakata
Article type: Article
1999 Volume 99 Issue 3 Pages
C3-C6
Published: June 20, 1999
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With the nuclear density distribution being simulated by the Boltzmann-Uhling-Uhlenbeck equation and Vlasov equation, the contribution of the two-body collisions is investigated. The calculated results indicate that the two-body collisions play a role of damping on the evolution from a superdeformed shape to a normal deformed shape in the case without rotation. In the case with rotation, the two-body collisions accelerate the evolution process.
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K. Yoshida, M. Matsuo, Y.R. Shimizu
Article type: Article
1999 Volume 99 Issue 3 Pages
C7-C12
Published: June 20, 1999
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Decay-out of excited superdeformed states is discussed in terms of quantum tunneling between compound states in the super deformed and the normal deformed wells. For this puiposc we extend a statistical model which has been applied to the decay-out of the ground superdeformed band. Decay-out probability is estimated as a function of spin and excitation energy. By using it we calculate E2 strength function for excited superdeformed states, which was previously given by a microscopic calculation of rotational damping without the decay-out mechanism. Number of superdeformed bands obtained from the E2 strength turns out to be larger than in the normal deformed case.
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Tamanna Rumin, K. Hagino, N. Takigawa
Article type: Article
1999 Volume 99 Issue 3 Pages
C13-
Published: June 20, 1999
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C14-C23
Published: June 20, 1999
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An extended form of the thermal random phase approximation (ETRPA) equation is derived by applying the variational principle to the grand potential. The ETRPA equation is a realization of the desirable formalism which is exact within the framework of the random phase approximation (RPA) at finite temperature (T≠0), and smoothly goes to the RPA equation in the limit of T → 0. It describes an interplay between the collective excitations and the entropy effect. The ETRPA matrix precisely cincides with the stability matrix for the thermal Hartree-Fock-Bogoliubov (THFB) solution. The entropy effect is associated with the fluctuation of the occupation numbers in each single-particle (or quasiparticle) level determined by the mean field equation (i.e. the THFB equation). Based on a simple model, it can be shown that the entropy effect causes some shifts of excitation energies of the ph, pp and hh configurations, and it may slightly affect the temperature-dependent evolution of the giant resonance shape.
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Mitsuru Tohyama
Article type: Article
1999 Volume 99 Issue 3 Pages
C24-C32
Published: June 20, 1999
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A correlated ground state of ^40Ca and an isoscalar E2 giant resonance built on it are calculated using an extended version of the time-dependent Hartree-Fock theory known as the time-dependent density-matrix theory (TDDM). The Skyrme III force is used as an effective interaction for the calculation of both a mean field and two-body correlations. It is found that, although a TDDM calculation with the Skyrme force gives reasonable ground-state correlations, the calculated spreading width of the E2 giant resonance is small as compared with experiments. A double phonon state of the E2 giant resonance is also studied in TDDM. It is found that the double phonon state calculated in TDDM has properties of the double phonon states of the E2 resonance calculated in the random phase approximation.
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C33-
Published: June 20, 1999
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C34-C39
Published: June 20, 1999
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[in Japanese], [in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C40-C47
Published: June 20, 1999
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C48-C49
Published: June 20, 1999
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Shiwei Yan, Fumihiko Sakata, Yi-zhong Zhuo, Xi-zhen Wu
Article type: Article
1999 Volume 99 Issue 3 Pages
C50-C59
Published: June 20, 1999
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Aiming to understand the microscopic mechanism responsible for the dissipative behavior of the large-amplitude collective motion and the complex interplay between the collective and single particle degrees of freedom, a system with three degrees of freedom is examined within the time-dependent Hartree-Fock theory. Exploiting the self-consistent collective coordinate (SCC) method, the total system is optimally devided into the collective and intrinsic subsystems. The energy dissipation process and dynamical evolution process of each subsystem are numerically simulated and examined. The numerical results shows that the energy of collective motion is transfered to the environment and the regularity of collective degree of freedom is almost kept sticking to the KAM torus, and the intrinsic subsystem remains in chaotic situation so as to be treated as a heat bath.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1999 Volume 99 Issue 3 Pages
C60-C65
Published: June 20, 1999
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1999 Volume 99 Issue 3 Pages
C66-C67
Published: June 20, 1999
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Y. Aritomo, G.I. Kosenko, Yu.Ts. Oganessian, K. Okazaki, T. Wada, M. O ...
Article type: Article
1999 Volume 99 Issue 3 Pages
C68-
Published: June 20, 1999
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Article type: Appendix
1999 Volume 99 Issue 3 Pages
C69-C70
Published: June 20, 1999
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Article type: Appendix
1999 Volume 99 Issue 3 Pages
C71-
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C72-C73
Published: June 20, 1999
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C73-
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C73-C74
Published: June 20, 1999
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
C74-
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Article type: Appendix
1999 Volume 99 Issue 3 Pages
115-142
Published: June 20, 1999
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[in Japanese]
Article type: Article
1999 Volume 99 Issue 3 Pages
143-147
Published: June 20, 1999
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Article type: Appendix
1999 Volume 99 Issue 3 Pages
App2-
Published: June 20, 1999
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Article type: Appendix
1999 Volume 99 Issue 3 Pages
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Published: June 20, 1999
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Article type: Cover
1999 Volume 99 Issue 3 Pages
Cover2-
Published: June 20, 1999
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Article type: Cover
1999 Volume 99 Issue 3 Pages
Cover3-
Published: June 20, 1999
Released on J-STAGE: October 02, 2017
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