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Article type: Index
2007 Volume 62 Issue 4 Pages
Toc1-
Published: April 05, 2007
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Article type: Index
2007 Volume 62 Issue 4 Pages
Toc3-
Published: April 05, 2007
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Ikuo Ono
Article type: Article
2007 Volume 62 Issue 4 Pages
229-
Published: April 05, 2007
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Takashi Nakajima
Article type: Article
2007 Volume 62 Issue 4 Pages
230-238
Published: April 05, 2007
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Spin-polarized electrons, ions, and nucleus are known to be very useful in high-energy physics, surface science, atomic and molecular physics, and nuclear physics, etc. In particular, use of lasers for spin-polarization has a great advantage in that spin-polarization is realized without physical contact. However, most of the existing schemes of spin-polarization rely on continuous wave (CW) lasers which have some restrictions in terms of the available wavelengths, powers, and simpliness of handling. Use of pulsed lasers lifts these restrictions. In this review we will discuss some schemes based on pulsed lasers together with theoretical and experimental data.
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Daisuke Ida
Article type: Article
2007 Volume 62 Issue 4 Pages
238-244
Published: April 05, 2007
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As soon as the brane universe model is proposed, it was suggested that there possibly exist extra dimensions with their size much greater than the Planck length. In a space-time model with such macroscopic extra dimensions, higher-dimensional black holes enter the theory at the classical level. One could see a lot of aspects of the theories in higher-dimensional space-times through such black holes. On the other hand, it has gradually been known that higher-dimensional black holes look quite different from those in four-dimensional space-times. Here we review recent studies and related topics on higher-dimensional black holes.
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Chiaki Uyeda
Article type: Article
2007 Volume 62 Issue 4 Pages
245-249
Published: April 05, 2007
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Up to now, existence of diamagnetic anisotropy Δχ_<DIA> has not been recognized for a immense number of nonmetallic crystals. Small Δχ_<DIA> are accumulated for various oxide crystals by measuring the rotational oscillation of the crystal with respect to magnetic field. The Δχ_<DIA> values were explained quantitatively by assigning a constant Δχ_<DIA> to the individual bonding orbital. Almost full alignment is achieved for many of the micron-sized diamagnetic crystals dispersed in fluid at field intensity below 2T.
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Fumihiko Ukegawa, Satoru Uozumi, Shinhong Kim
Article type: Article
2007 Volume 62 Issue 4 Pages
249-254
Published: April 05, 2007
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The CDF experiment at the Tevatron proton-antiproton collider at Fermi National Accelerator Laboratory in Batavia, Illinois, USA, has recently observed particle-antiparticle oscillations of the bottom-strange meson, B^O_S, and measured the frequency of the oscillations, Δm_s. It has led to a precise determination of the elements |V_<td>/V_<ts>| of the Kobayashi-Maskawa matrix, providing a unique test of the Kobayashi-Maskawa theory of CP violation in weak interactions of elementary particles. The observation will also enable studies of CP-violation phenomena using the decay modes of the B^O_S meson that have not been explored previously.
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Yusuke Nambu, Satoru Nakatsuji, Yoshiteru Maeno
Article type: Article
2007 Volume 62 Issue 4 Pages
254-259
Published: April 05, 2007
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Geometrically frustrated magnets have attracted interest because of their possible novel phenomena upon suppression of conventional magnetic orders. Among such magnets, one of the simplest examples, the triangular antiferromagnet, has been studied extensively. However, most of the systems have been found to order antiferromagnetically at low temperatures. Recently, we have developed NiGa_2S_4, as the first example of a bulk low spin (S≤1) 2D antiferromagnet with an exact triangular lattice. This compound exhibits a spin disordered state instead of either antiferromagnetic order or conventional spin glass state. In this review, we present our recent experimental results for NiGa_2S_4 and its nonmagnetic impurity effects, as well as the relevant theoretical results.
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Toru Ohira
Article type: Article
2007 Volume 62 Issue 4 Pages
260-264
Published: April 05, 2007
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Hisao Hayakawa
Article type: Article
2007 Volume 62 Issue 4 Pages
265-268
Published: April 05, 2007
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Toshio Hyodo
Article type: Article
2007 Volume 62 Issue 4 Pages
269-272
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Hideki Takayasu
Article type: Article
2007 Volume 62 Issue 4 Pages
272-275
Published: April 05, 2007
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[in Japanese]
Article type: Article
2007 Volume 62 Issue 4 Pages
276-
Published: April 05, 2007
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Noboru Hokkyo
Article type: Article
2007 Volume 62 Issue 4 Pages
276-277
Published: April 05, 2007
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Hiroyuki Shiba
Article type: Article
2007 Volume 62 Issue 4 Pages
278-279
Published: April 05, 2007
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[in Japanese]
Article type: Article
2007 Volume 62 Issue 4 Pages
279-
Published: April 05, 2007
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[in Japanese]
Article type: Article
2007 Volume 62 Issue 4 Pages
279-280
Published: April 05, 2007
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[in Japanese]
Article type: Article
2007 Volume 62 Issue 4 Pages
280-
Published: April 05, 2007
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[in Japanese]
Article type: Article
2007 Volume 62 Issue 4 Pages
281-
Published: April 05, 2007
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[in Japanese]
2007 Volume 62 Issue 4 Pages
282-
Published: April 05, 2007
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2007 Volume 62 Issue 4 Pages
283-
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Article type: Appendix
2007 Volume 62 Issue 4 Pages
284-290
Published: April 05, 2007
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Article type: Appendix
2007 Volume 62 Issue 4 Pages
290-291
Published: April 05, 2007
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[in Japanese]
Article type: Appendix
2007 Volume 62 Issue 4 Pages
291-
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Article type: Appendix
2007 Volume 62 Issue 4 Pages
292-295
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Article type: Appendix
2007 Volume 62 Issue 4 Pages
296-314
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Article type: Appendix
2007 Volume 62 Issue 4 Pages
315-316
Published: April 05, 2007
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Article type: Appendix
2007 Volume 62 Issue 4 Pages
317-318
Published: April 05, 2007
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