Soryushiron Kenkyu Electronics

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Print ISSN : 0371-1838

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Volume 61, Issue 2

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[title in Japanese]

Article type: Cover
1980 Volume 61 Issue 2 Pages Cover1-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_Cover1

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[title in Japanese]

Article type: Appendix
1980 Volume 61 Issue 2 Pages App1-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_App1

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[title in Japanese]

Article type: Appendix
1980 Volume 61 Issue 2 Pages 249-250
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_249

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 251-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_251

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 252-257
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_252

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 258-267
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_258

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 268-270
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_268

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 270-273
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_270

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 273-283
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_273

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 283-287
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_283

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 287-292
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_287

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 293-295
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_293

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 295-298
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_295

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 298-300
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_298

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 300-301
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_300

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 301-307
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_301

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 307-311
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_307

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[title in Japanese]

Article type: Appendix
1980 Volume 61 Issue 2 Pages 313-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_313

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Topology of Zero Riemann Curvature Flat Space in Supergravity

[in Japanese], [in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 314-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_314_1

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Gravity from Poincare Gauge Theory of the Fundamental Particles : I. Linear and Quadratic Lagrangians

[in Japanese], [in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 314-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_314_2

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 315-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_315_1

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Quantum Theory in Curved Space Time

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 315-
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_315_2

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 316-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_316_1

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 316-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_316_2

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 317-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_317_1

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 317-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_317_2

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 317-318
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_317_3

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 318-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_318_1

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 318-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_318_2

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[title in Japanese]

Article type: Appendix
1980 Volume 61 Issue 2 Pages 319-320
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_319

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GIANT RESONANCE STATES OF NUCLEI

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 321-329
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_321

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Macroscopic structure of giant resonance states is explored with use of semi-classical models based on the model-independent sum rules.

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 329-333
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_329

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Energy Weighted Sum Rule for Spin-Dependent Excitations of Nuclei

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 334-340
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_334

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An expression of the RPA-energy weighted sum rule for spin-dependent multipole operators is derived and used to relate the sum rule value to the Fermi liquid parameters, including the effect of the tensor force. Numerical results for the 'exchange' contribution to the sum rule are presented and discussed. It is shown that the M2 strength recently observed from the electron scattering experiment exhausts only about 20% of the energy weighted sum rule value.

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GIANT RESONANCES IN DEFORMED NUCLEI

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 340-345
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_340

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RECENT EXPERIMENTS AT TOHOKU LINAC AROUND GIANT RESONANCE REGION

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 345-353
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_345

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(1) Electroexcitations of electric giant multipole resonances (GR) of strongly deformed nuclei (^<238>U, ^<152>Sm, ^<24>Mg) were studied systematically. ^<238>U, ^<152>Sm... 0^+GR (breathing mode) was not affected by nuclear deformation and was seen between two 1^-GR (K^π0^-, 1^-) peaks. 2^+GR (K^π=0^+, 1^+, 2^+) spectrum was reproduced with small splitting (&cong;2 MeV). ^<24>Mg... Measured spectrums were unfolded into multipole distributions (C1,..,C6). C1 component was very similar to (γ, n) spectrum. C2, C3 components were widely distributed up to E_X&cong;34 MeV. 6^+ state (1d_<5/2>^<-1>, -1g_<9/2>) was discovered at 9.92 MeV. (2) Backward inelastic electron scattering from ^<90>Zr (θ=155°) and ^<24>Mg(θ=180°) were measured to study their transverse excitations. ^<90>Zr... Spin dependent E1, M2 GR's are expected between E_X=11 and 25 MeV. ^<24>Mg... 2nd peak of M1 form factor of the 10.65 MeV, T=1, 1^+ state was measured. Strong enhancement was observed as compared to (1d_<5/2>^<-1>, 1d_<3/2>) form factor.

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Nucelar Rotations Studied by Variational Methods

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 353-362
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_353

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General nuclear rotations including precession and wobbling motions are studied by both time -dependent variational method and "double variational method". Shortcomings and advantages of the cranking model and the angular momentum projection method are investigated. A method which removes the shortcoming and takes over the advantages is suggested.

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Backbending in the Intruder Particles plus Soft Rotor Model

[in Japanese], [in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 363-368
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_363

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The model of i_<13/2> particles coupled to a soft rotor, which is described using the angular momentum projection method applied to coherent boson states, is applied to the Er isotopes using the full shell model space for i_<13/2>. The properties of the wave functions of g-band and S-band are discussed.

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On the Difficulty of the Cranked Hartree-Fock-Bogoliubov Theory at the Band Crossing Region

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 368-376
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_368

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The cranked Hartree-Fock-Bogoliubov theory is extended by introducing each different angular frequency with respect to intruder and core motions. The quasi-stable solutions for band crossing region are found by the present approach for ^<158>Er. The wave functions can not be connected between two bands.

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Hamamoto's Remedy for the Band Crossing Anomalies in the Cranking Model

Y. Tanaka, R. Okamoto, S. Suekane

Article type: Article
1980 Volume 61 Issue 2 Pages 376-381
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_376

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Hamamoto's remedy for the band crossing anomalies is investigated using a schematic model. It is shown that the remedy is applicable only in the vicinity of the band crossing point. The main point of her prescription is to diagonalize the particle-rotor model Hamiltonian which includes the inter-band interaction h, using the basis constructed from the solutions of the cranking model by excluding h which is the origin of the anomalies. Consequently, the resulting wave functions show the anomalously sharp and large peak in the angular momentum fluctuation in the band crossing region. The matrix element of h results in the state-dependent gap parameter under the Marshalek's a priori assumption on the pairing interaction in the rotating frame.

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Cranking Mass Parameter at High Temperature Limit and Liquid-Drop Value

A. Iwamoto

Article type: Article
1980 Volume 61 Issue 2 Pages 381-385
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_381

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Mass parameter at finite temperature is discussed starting from the cranking formula. A general discussion about the disappearance of the shell effect and about the relation to the liquid drop value is given. A special attention is given to the stretching motion for which we calculated the mass parameters related to the harmonic oscillator potential and to the Fermi gas. In both cases, the equivalence of the cranking mass and the incompressible irrotational liquid drop value is shown.

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[title in Japanese]

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 386-389
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_386

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COLLECTIVE MODES IN A NUCLEUS "ROTATING" ABOUT THE SYMMETRY AXIS

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 390-392
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_390

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A simple model of collective modes in a nucleus "rotating" about the symmetry axis is derived on the basis of the cranked harmonic oscillator model. The two-body effective interaction is determined self-consistently by using the Landau theory of Fermi liquids. The RPA dispersion equation can be solved exactly. Obtained RPA modes are as follows. i) Collective modes corresponding to the usual giant quadrupole modes in a axially symmetric deformed nucleus. Each degenerate ± K component splits. (K=1, 2) ii) The collective rotational mode. From a classical point of view, this mode corresponds to the motion of a symmetric top moving freely. iii) The spurious mode, which can be normalized. iv) The non-collective mode in the neighborhood of the yrast line.

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Continuousγ-rays emitted from highly excited high-spin states

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 392-395
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_392

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The side feeding times of γ-rays to yrast states emitted from highly excited high-spin states are discussed. Theoretical values are compared with experimental ones and the origins of the discrepancies between them are also discussed.

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A Review on the Transitional Nuclei

T. Otsuka

Article type: Article
1980 Volume 61 Issue 2 Pages 395-406
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_395

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A review on the microscopic structure of the collective state in the transitional nuclei is presented. The favoured pair concept of Hecht et al. is first introduced. Various methods of collective state construction are investigated from the favoured pair point of view, and the importance of the seniority projection is emphasized. Effects of non S-D or non collective states are discussed, and it is suggested that the 4^+ collective pair plays a significant role. The truncation in the boson expansion technique is also discussed, and a serious problem is pointed out.

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THE INTERACTING BOSON APPROXIMATION AND THE BOSON EXPANSION TECHNIQUE

Nobuaki Yoshida, Akito Arima

Article type: Article
1980 Volume 61 Issue 2 Pages 406-413
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_406

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The Ginocchio model is used to study the Intreacting Boson Approximation. In order to derive its boson Hamiltonian from the fermion Hamiltonian of the Ginocchio model, we use the Boson Expansion Technique with s- and d-bosons and the Otsuka-Arima-Iachello method. The results of calculation show that the Interacting Boson Model with the two Hamiltonians given by those two methods are good approximations to exact solutions. We also study the Boson Expansion with d-bosons only after the BCS transformation. The results show that this is not a good approximation.

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Towards the microscopic foundation of the proton-neutron interacting boson model

T. Otsuka

Article type: Article
1980 Volume 61 Issue 2 Pages 413-418
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_413

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Recent development of the microscopic foundation of the proton-neutron interacting boson model is presented. The boson Hamiltonian is constructed microscopically in a degenerate single particle orbit shell. The Hamiltonian contains effects of non S-D states through renormalization of relevant terms, but still consists of one- and two-body terms. Spectra obtained by this Hamiltonian can be compared well with those obtained in the shell model diagonalization.

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ANALYSES OF TRANSITIONAL NUCLEI BY BOSON EXPANSION METHOD

T. Kishimoto

Article type: Article
1980 Volume 61 Issue 2 Pages 418-428
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_418

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This report is essentially the review of what I have been doing in the past ten years in collaboration with Drs. T. Tamura and K. Weeks at the University of Texas at Austin, USA. However, instead of duplicating our published works, I would like to emphasize physical concepts we have kept in mind throughout our study.

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A Microscopic Description of Pairing Rotation

Y. Miyanishi, G. Watanuki

Article type: Article
1980 Volume 61 Issue 2 Pages 429-433
Published: May 20, 1980
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DOIhttps://doi.org/10.24532/soken.61.2_429

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It is shown that the pairing rotational mode can be expressed in terms of the special quasi-boson mode with zero energy (Goldstone boson mode) by introducing the intrinsic Hamiltonian free from pairing rotation under the RPA. The coupling between pairing rotation and intrinsic excitations is investigated as the interplay of this special eigenmode and the intrinsic modes due to the effects neglected in the RPA.

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A Non-Linear Extension of the Quasiparticle Random-Phase Approximation for Description of Nuclear Collective Motions

[in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 434-
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_434_1

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Dynamical Anharmonic Effects in Low-lyng Unique Parity States in ^<93>Nb,

[in Japanese], [in Japanese], [in Japanese]

Article type: Article
1980 Volume 61 Issue 2 Pages 434-439
Published: May 20, 1980
Released on J-STAGE: October 02, 2017

DOIhttps://doi.org/10.24532/soken.61.2_434_2

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