Butsuri

Online ISSN : 2423-8872
Print ISSN : 0029-0181
ISSN-L : 0029-0181

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Volume 57, Issue 10

Displaying 1-31 of 31 articles from this issue

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[title in Japanese]

Article type: Cover
2002 Volume 57 Issue 10 Pages Cover1-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.Cover1

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[title in Japanese]

Article type: Index
2002 Volume 57 Issue 10 Pages Toc1-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.Toc1

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[title in Japanese]

Article type: Index
2002 Volume 57 Issue 10 Pages Toc2-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.Toc2

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Future e⁺e^- Linear Collider and Top Quark Physics

Yukinari Sumino

2002 Volume 57 Issue 10 Pages 719-727
Published: October 05, 2002
Released on J-STAGE: April 14, 2008

DOIhttps://doi.org/10.11316/butsuri1946.57.719

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Experiments at an e⁺e^- linear collider are now seriously considered to be the next step of frontier high energy experiments. First we give an elementary introduction to the physics motivation and the primary aim of a future e⁺e^- linear collider. Then we focus on the experiment in the energy region close to the tt pair-production threshold. This is planned as a first stage experiment in the linear collider operation. We review the rich physics to be covered there with an emphasis on key theoretical ideas.

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Dynamical Processes for Switching between Two Macroscopic States in Photoinduced Phase Transitions

Masamichi Nishino, Seiji Miyashita

2002 Volume 57 Issue 10 Pages 728-737
Published: October 05, 2002
Released on J-STAGE: April 14, 2008

DOIhttps://doi.org/10.11316/butsuri1946.57.728

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Photoinduced phase transitions (PIPT) have currently attracted interest because they may offer the possibility to build optical memory devices etc. The dynamical properties of PIPT are also important from the viewpoint of the analysis of relaxation phenomena. We mainly study PIPT in spin-crossover compounds. Many studies have been devoted to elucidate the nature of spin-cross-over compounds, in which a transition between the low spin state and the high spin state can be induced by a change in temperature, pressure, etc. PIPT is expected to provide a new mechanism to control electronic and magnetic states by external fields. The mechanism of PIPT is often discussed from the viewpoint of an adiabatic potential. However, it has been found that cooperative phenomena play an important role in PIPT and one has to take into account the thermodynamic stability of macroscopic states. We study mechanisms of reversible switching between stable and metastable states by illumination. We introduce models of interacting spin-crossover molecules and investigate the effect of illumination on these models. The dynamics of the order parameter under the influence of illumination is studied by making use of a stochastic dynamics. It is clarified that the two-way switching is possible when the system has appropriate multi-time scales of the dynamical processes, even if illumination causes only a non-symmetry breaking perturbation.

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Yohkoh Has Seen Solar Corona! : Scientific Results of Its Full Solar-Cycle Observation in X-rays

Tetsuya Watanabe

2002 Volume 57 Issue 10 Pages 738-745
Published: October 05, 2002
Released on J-STAGE: April 14, 2008

DOIhttps://doi.org/10.11316/butsuri1946.57.738

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Yohkoh, a Japanese solar-physics satellite, was launched in August 1991 and has been successfully observing solar corona in X-rays and gamma-rays for more than ten years till December 2001. The length of observation nearly corresponds to a full solar activity cycle. Yohkoh has revealed that solar corona is very dynamic, that magnetic reconnection plays an essential role in the energy release mechanism of solar flares, that it is commonly manifested in various coronal activity, such as microflares, X-ray jets, and coronal mass ejections (CMEs), and found that coronal heating itself might have close relationship with magnetic reconnection. Yohkoh's excellent observations have stimulated researches of magnetic reconnection in other related physics fields, and appreciated the launch of next Japanese solar satellite, Solar-B.

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Physical Properties of Water and Geodynamics : "Hard" Water in the Earth's Interior and the Origin of Earthquakes ?(Science Today)

Satoru Nakashima

2002 Volume 57 Issue 10 Pages 746-753
Published: October 05, 2002
Released on J-STAGE: April 14, 2008

DOIhttps://doi.org/10.11316/butsuri1946.57.746

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Water is found to be distributed mainly in grain boundaries in shallower parts of the earth (crust) by infrared microspectroscopy. Thin film water in grain boundaries might have an ice-like "harder" character than normal free liquid water. In deeper parts of the crust, with grain growth at higher temperatures, the decrease in water content and grain boundary width would result in disconnected "hard" water in grain boundaries with high viscosity and low permeability. This "hard" water might therefore be a possible origin of earthquakes. The chemistry (NaCl vs. CO₂) of water affects greatly the "hardness" of water and could control earth's dynamics. This paper review the geodynamics, which has been considered by macroscopic mechanical phenomena, with a new microscopic physicochemical point of view based on water structure.

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Optical Lattice Clock : A Novel Tool for Precision Optical-Frequency Measurements(Current Topics)

Hidetoshi Katori

2002 Volume 57 Issue 10 Pages 754-758
Published: October 05, 2002
Released on J-STAGE: April 14, 2008

DOIhttps://doi.org/10.11316/butsuri1946.57.754

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Recent progress in phase coherent optical frequency measurement based on SI second has brought about unprecedented significance for the development of frequency standards in optical region. We present an idea of "optical lattice clock" that allows to interrogate millions of quantum absorbers separately prepared in the Lamb-Dicke region. We discuss the implementation of light shift cancellation technique and demonstrate a high-resolution spectroscopy of strontium atoms trapped in a 1D optical lattice.

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Measurement of CP Violation in B⁰→π⁺π^- Decays(Current Topics)

Hiroyuki Sagawa

2002 Volume 57 Issue 10 Pages 759-762
Published: October 05, 2002
Released on J-STAGE: April 14, 2008

DOIhttps://doi.org/10.11316/butsuri1946.57.759

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Report on the Discussions at the Congress of Physical Societies

Sukekatsu Ushioda

Article type: Article
2002 Volume 57 Issue 10 Pages 763-765
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.763

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How to Make Good Use of Abilities of Retired Physicists

Hiroyuki Shiba

Article type: Article
2002 Volume 57 Issue 10 Pages 766-767
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.766

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Center of Rotation of Rigid Bodies in Plane(Aha! Toys in Classroom)

Yukio Kobayashi

Article type: Article
2002 Volume 57 Issue 10 Pages 767-768
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.767

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To the Memory of Late Professor Hazime Kawamura

Eizo Otsuka

Article type: Article
2002 Volume 57 Issue 10 Pages 769-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.769

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[title in Japanese]

[in Japanese]

Article type: Article
2002 Volume 57 Issue 10 Pages 770-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.770_1

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[title in Japanese]

[in Japanese]

Article type: Article
2002 Volume 57 Issue 10 Pages 770-771
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.770_2

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[title in Japanese]

[in Japanese]

Article type: Article
2002 Volume 57 Issue 10 Pages 771-772
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.771

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[title in Japanese]

[in Japanese]

Article type: Article
2002 Volume 57 Issue 10 Pages 772-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.772

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[title in Japanese]

[in Japanese]

Article type: Article
2002 Volume 57 Issue 10 Pages 773-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.773_1

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[title in Japanese]

Article type: Article
2002 Volume 57 Issue 10 Pages 773-774
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.773_2

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[title in Japanese]

Article type: Article
2002 Volume 57 Issue 10 Pages 774-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.774_1

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[title in Japanese]

Article type: Article
2002 Volume 57 Issue 10 Pages 774-775
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.774_2

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 775-779
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.775

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 780-782
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.780

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 783-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.783

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 784-785
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.784

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 786-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.786

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 787-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.787

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 788-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.788

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 789-
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.789_1

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 791-792
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.791

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[title in Japanese]

Article type: Appendix
2002 Volume 57 Issue 10 Pages 793-796
Published: October 05, 2002
Released on J-STAGE: April 05, 2019

DOIhttps://doi.org/10.11316/butsuri1946.57.10.793

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