Butsuri

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

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Volume 64, Issue 9

Displaying 1-28 of 28 articles from this issue

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[title in Japanese]

Article type: Cover
2009 Volume 64 Issue 9 Pages Cover1-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_Cover1

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[title in Japanese]

Article type: Index
2009 Volume 64 Issue 9 Pages Toc1-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_Toc1

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Turning Point of Publishing Scientific Journals

Kazuo Ueda

2009 Volume 64 Issue 9 Pages 665-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_665

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A World of Plasma Physics Developed by the Large Helical Device : Transition Phenomena of Plasma Flow and Temperature

Katsumi Ida

2009 Volume 64 Issue 9 Pages 666-673
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_666

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The Large Helical Device is a confinement device of high temperature and density plasma using the Larmor motion of electron and ions. Since the start of LHD experiment in 1998, plasma confinement performance (how large an energy and high a central temperature and density can be achieved for a given heating power, like a mileage of automobile) has been improved and is approaching the conditions of nuclear fusion. While the car mileage can be varied only by a factor of two depending on the driving technique, the plasma confinement performance can be improved by an order of magnitude depending on the operation. This is because the temperature gradient increases by an order of magnitude associated with the change of the flow pattern from vortex to laminar flow, which determines the confinement performance. The most advanced studies to clarify the physics mechanism of the transition phenomena of the plasma flow pattern and temperature will be discussed in this article.

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MEG Studies Prohibited Muon Decays to Explore Grand Unified Theories of Elementary Particles

Toshinori Mori

Article type: Article
2009 Volume 64 Issue 9 Pages 674-681
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_674

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The MEG experiment, designed and proposed by Japanese physicists, is being carried out at Paul Scherrer Institute (PSI) in Switzerland, in collaboration with physicists from Italy, Switzerland, Russia and U.S.A. The experiment will make an extensive search for a muon's two-body decay into an electron and a gamma ray, μ→eγ, which is prohibited in the Standard Model of elementary particles, to explore Supersymmetric Grand Unified Theories. This article gives a brief description of the MEG experiment with an emphasis on the innovative experimental techniques developed to achieve the unprecedented experimental sensitivity.

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Direct CP Violation in B→Kπ Decays : A Puzzle Brought by "Penguin" Decays(Current Topics)

Toru Iijima

Article type: Article
2009 Volume 64 Issue 9 Pages 682-686
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_682

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In the two-body decay of the B meson to the K meson and the π meson, direct CP violation arises from interference of two decay amplitudes. While this phenomena is a characteristic phenomena predicted by the Kobayashi-Maskawa model, as larger data sample have been collected at the B factory experiments, the difference of the CP asymmetry between the neutral and charged B mesons become more evident. The difference cannot be explained theoretically, known as "Kπ" puzzle. While no clear conclusion can be drawn, it may indicate a new physics beyond the standard model.

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Diffusion Experiment with the Accelerated, Short-Lived Radioactive Beam of ^8Li(Current Topics)

Sun-Chan Jeong, Hiroyuki Sugai, Masahito Yahagi

Article type: Article
2009 Volume 64 Issue 9 Pages 687-691
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_687

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We have demonstrated a non-destructive and on-line radiotracer method for diffusion studies in lithium ionic conductors, by using, as a tracer, the short-lived α-emitting radioisotope of ^8Li from TRIAC (Tokai Radioactive Ion Accelerator Complex). The method has been successfully applied to measure the lithium diffusion coefficients in a typical defect-mediated lithium ionic conductor of LiGa, well demonstrating that the method is very effective to measure the diffusion in the micrometer regime per second. Anomalous composition-dependence of Li diffusion coefficients in LiGa was observed; the stoichiometric LiGa showed the highest diffusivity of Li. The anomaly was discussed qualitatively in terms of the formation of defect complex and the interaction between the constituent defects. The ordering of the Li vacancies in the Li-deficient LiGa was observed for the first time in terms of the Li diffusion by the present method, and its thermodynamic aspect was discussed.

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Analysis of Higgs Boson Mass Limit from LEP Experiment in General Minimal Supersymmetric Standard Model, and the Possibility of the Light Higgs Boson(Current Topics)

Kazuhiro Tobe

Article type: Article
2009 Volume 64 Issue 9 Pages 691-695
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_691

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LEP experiment has set the lower limit on the standard model (SM) Higgs boson mass, 114GeV. Since there is the naturalness problem in the Higgs sector of the SM, we expect that the Higgs boson interactions can be modified in the physics beyond the SM. In this article, we consider the minimal supersymmetric standard model (MSSM), and reanalyzed the LEP limits in the general MSSM, and we point out the possibility of the light Higgs boson, which has not been discussed much in the past.

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New Progress in Cosmology : Probing the Physics of the Early Universe from Non-Gaussianity of Temperature Anisotropy of Cosmic Microwave Background(Current Topics)

Teruaki Suyama

Article type: Article
2009 Volume 64 Issue 9 Pages 696-699
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_696

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Recently, non-gaussianity of the temperature anisotropy of the Cosmic Microwave Background has attracted a great deal of interest as a powerful probe of the early universe. By using non-gaussianity, we can probe the aspects of the origin of the temperature anisotropy that can not be probed by other observables. I will explain what we can learn about physics of the early universe if or if not non-gaussianity is detected in the future.

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A New Approach for Probing a Supermassive Binary Black Hole(Current Topics)

kimitake Hayasaki

Article type: Article
2009 Volume 64 Issue 9 Pages 700-703
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_700

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JPSJ Selected Papers in the Latest Issue

Hajime Takayama

Article type: Article
2009 Volume 64 Issue 9 Pages 704-706
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_704

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[title in Japanese]

[in Japanese], [in Japanese]

2009 Volume 64 Issue 9 Pages 707-709
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_707

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Postdoc Issues as Seen from the Membership of Soryushiron Group(Network Pages for Professional Development of Physicists)

Masako Asano

Article type: Article
2009 Volume 64 Issue 9 Pages 710-712
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_710

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In Memory of Dr. Mitio Inokuti

Michio Matsuzawa

2009 Volume 64 Issue 9 Pages 713-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_713

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 9 Pages 714-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_714_1

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 9 Pages 714-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_714_2

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 9 Pages 715-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_715_1

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 9 Pages 715-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_715_2

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 9 Pages 716-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_716

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[title in Japanese]

2009 Volume 64 Issue 9 Pages 716-717
Published: 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_716_2

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 9 Pages 717-723
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_717_2

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[title in Japanese]

2009 Volume 64 Issue 9 Pages 723-724
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_723

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 9 Pages 724-725
Published: 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_724

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 9 Pages 726-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_726

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 9 Pages 730-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_730

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 9 Pages 731-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_731

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 9 Pages 732-
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_732_1

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 9 Pages 732-734
Published: September 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.9_732_2

JOURNAL FREE ACCESS

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