Butsuri

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

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Volume 67, Issue 6

Displaying 1-24 of 24 articles from this issue

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[title in Japanese]

Article type: Cover
2012 Volume 67 Issue 6 Pages Cover1-
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_Cover1

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[title in Japanese]

Article type: Index
2012 Volume 67 Issue 6 Pages Toc1-
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_Toc1

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[title in Japanese]

Article type: Index
2012 Volume 67 Issue 6 Pages Toc2-
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_Toc2

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[title in Japanese]

Article type: Appendix
2012 Volume 67 Issue 6 Pages 371-374
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_371

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Physics, It's Tricky

Tohru Motobayashi

Article type: Article
2012 Volume 67 Issue 6 Pages 375-
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_375

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The Tantalizing Hint of Higgs Boson at LHC(Recent Topic)

Shoji Asai

Article type: Article
2012 Volume 67 Issue 6 Pages 376-377
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_376

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Solar Power Sail Demonstrator IKAROS

Osamu Mori, Yuichi Tsuda

Article type: Article
2012 Volume 67 Issue 6 Pages 378-384
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_378

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Japan Aerospace Exploration Agency (JAXA) successfully achieved the world's first solar power sail technology by IKAROS (Interplanetary Kite-craft Accelerated by Radiation Of the Sun) mission in 2010. It demonstrated a photon propulsion and thin film solar power generation during its interplanetary cruise. The sail of 200m^2 was deployed and kept extended by centrifugal force of the spacecraft rotaion. IKAROS also succeeded in accelerating and controlling the orbit by actively exploiting solar radiation pressure, and thus became the world's first actual solar sailer flying an interplanetary voyage. This paper presents the design of IKAROS solar sail system, operation results and introduces a perspective of this new technology to apply to the next generation mission toward Jupiter and Trojan asteroids.

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Spontaneous Motion of a Droplet Coupled with Pattern Formation(Current Topics)

Hiroyuki Kitahata, Natsuhiko Yoshinaga, Ken H. Nagai, Yutaka Sumino

Article type: Article
2012 Volume 67 Issue 6 Pages 385-389
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_385

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We propose a model experiment and theoretical framework for the spontaneous motion of a droplet coupled with pattern formation through chemical reaction inside it. The nonlinearity of the chemical reaction gives rise to inhomogeneous concentration profile, which leads to interfacial tension gradient at the droplet interface. The interfacial tension gradient induces self-propulsion of the droplet itself through the surrounding flow due to the Marangoni effect. The experiments are made by using a droplet of Belousov-Zhabotinsky (BZ) reaction medium. Numerical calculations for the dynamics on the concentration profiles inside the droplet together with analytical results on the flow fields at low Reynolds number well reproduce the experimental results.

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Looking into the Nuclear Matrix Elements of Double Beta Decay(Current Topics)

Kentaro Yako, Hideyuki Sakai

Article type: Article
2012 Volume 67 Issue 6 Pages 389-394
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_389

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Searches of neutrinoless double beta decay are in progress at many laboratories because it is uniquely related to the absolute scale of the neutrino mass. To deduce the mass from the half-life, one needs the nuclear matrix element, which is available only through theoretical calculations of nuclear structure. This article introduces measurements of charge-exchange reactions to examine the present structure calculations on ^<48>Ca, which is a double-beta-decay nucleus decaying to ^<48>Ti. The distributions of the measured Gamow-Teller transition strengths going to the intermediate nucleus ^<48>Sc are not reproduced by the calculations, suggesting that the description of nuclear matrix elements by these calculations is incomplete.

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Boundary Condition, Topology, and Energy-Scale Deformation in Quantum Systems(Current Topics)

Toshiya Hikihara, Hosho Katsura, Isao Maruyama, Tomotoshi Nishino

Article type: Article
2012 Volume 67 Issue 6 Pages 394-398
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_394

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Boundary condition and topology play a crucial role in determining the properties of quantum system. We report our recent finding that one can change the topology of the ground states of quantum critical systems by applying "sine-square deformation" which introduces a gradual modulation in local energy scale of the system but does not change the topology of the Hamiltonian. Implications of the result to several topics are also discussed.

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Experimental Demonstration of Generalized Uncertainty Relation(Current Topics)

Yuji Hasegawa

Article type: Article
2012 Volume 67 Issue 6 Pages 398-402
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_398

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Uncertainty principle is introduced by Heisenberg in 1927. Heisenberg's original relation is known to be valid only under specific circumstances, and Ozawa has derived an error-disturbance relation by using the theory of general quantum measurements. There, it is suggested that there are cases where the Heisenberg's original relation is not always valid. We tested the relation derived by Ozawa in neutron's spin measurements. The results confirm the validity of the relation by Ozawa.

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JPSJ Selected Papers in the Latest Issue

Arisato Kawabata

Article type: Article
2012 Volume 67 Issue 6 Pages 403-405
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_403

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[title in Japanese]

2012 Volume 67 Issue 6 Pages 405-
Published: 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_405

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The Seventh (2011) Junior Session in the 66th Annual Meeting of JPS(Physics Education Today)

Shunji Kitamoto, Masayuki Matsuo

Article type: Article
2012 Volume 67 Issue 6 Pages 406-408
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_406

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Physics Education for Civil Culture : The Past, Present and Future(La Toccata)

Takao Koda

Article type: Article
2012 Volume 67 Issue 6 Pages 409-410
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_409

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Galileo's Strategy for Intellectual Property(The Path to History)

Ichiro Tanaka

Article type: Article
2012 Volume 67 Issue 6 Pages 411-412
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_411

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In Memory of Professor Osamu Hashimoto

Hirokazu Tamura

Article type: Article
2012 Volume 67 Issue 6 Pages 413-
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_413

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[title in Japanese]

[in Japanese]

Article type: Article
2012 Volume 67 Issue 6 Pages 414-415
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_414

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[title in Japanese]

Article type: Appendix
2012 Volume 67 Issue 6 Pages 416-419
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_416

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[title in Japanese]

Article type: Appendix
2012 Volume 67 Issue 6 Pages 420-
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_420_1

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[title in Japanese]

[in Japanese]

2012 Volume 67 Issue 6 Pages 420-421
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_420_2

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[title in Japanese]

Article type: Appendix
2012 Volume 67 Issue 6 Pages 422-425
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_422

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[title in Japanese]

Article type: Appendix
2012 Volume 67 Issue 6 Pages 428-473
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_428

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[title in Japanese]

Article type: Appendix
2012 Volume 67 Issue 6 Pages 474-
Published: June 05, 2012
Released on J-STAGE: October 18, 2019

DOIhttps://doi.org/10.11316/butsuri.67.6_474

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