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- أكيرا هاسيغاوا (بالألمانية: Akira Hasegawa) (و. 1934 – م) هو فيزيائي، وأستاذ جامعي من اليابان . (ar)
- Akira Hasegawa (Japanese: 長谷川晃, Hepburn: Hasegawa Akira, born June 17, 1934 in Tokyo Prefecture) is a theoretical physicist and engineer who has worked in the US and Japan. He is known for his work in the derivation of the Hasegawa–Mima equation, which describes fundamental plasma turbulence and the consequent generation of zonal flow that controls plasma diffusion. Hasegawa also made the discovery of optical solitons in glass fibers, a concept that is essential for high speed optical communications. Hasegawa was the first to suggest the existence of optical solitons in 1973. In 1974, he (together with Liu Chen) showed that plasmas could be heated with the kinetic Alfvén wave. Hasegawa and Chen introduced the concept of the kinetic Alfven wave to illustrate the microscopic process of the Alfven wave heating. In 1977, Hasegawa introduced the Hasegawa–Mima equation to describe turbulence in Tokamak plasmas and then further developed it in the 1980s (with Masahiro Wakatani) to obtain the Hasegawa-Wakatani equation. The equation predicted an inverse cascade in the turbulent energy spectrum (i.e. from small to large wavelengths) and zonal flows (in the azimuthal direction in the Tokamak) that can control radial turbulent diffusion. With Wakatani, he wrote a paper on self-organized turbulence in plasmas. Hasegawa's proposal to trap plasmas with a dipole magnet similar to Earth's magnetic field, where turbulence caused by solar wind stabilizes the trap, was implemented in the first dipole plasma experiment at University of Tokyo by Prof. Zensho Yoshida. In 2010, a plasma experiment with a floating dipole was also built at the Massachusetts Institute of Technology. (en)
- Akira Hasegawa (jap. 長谷川 晃, Hasegawa Akira; * 17. Juni 1934 in der Präfektur Tokio) ist ein japanischer Physiker, der sich mit Plasmaphysik und optischen Solitonen beschäftigt. (de)
- 長谷川 晃（はせがわ あきら、1934年6月17日 - ）は、日本の物理学者。大阪大学名誉教授。専門は通信工学（光通信）、プラズマ物理学、地球物理学。日米関係などの社会学の著作もある。兵庫県芦屋市出身。 (ja)
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- (en)
- C&C Prize (en)
- Hannes Alfvén Prize (en)
- Hattori Hōkō Prize (en)
- IEEE/LEOS Quantum Electronics Award (en)
- James Clerk Maxwell Prize for Plasma Physics (en)
- Japan Academy Prize (en)
- Rank Prize (en)
- Shida Rinzaburō Prize (en)
- Moet Hennessy-Louis Vuitton Da Vinci of Excellence Prize (en)
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- أكيرا هاسيغاوا (بالألمانية: Akira Hasegawa) (و. 1934 – م) هو فيزيائي، وأستاذ جامعي من اليابان . (ar)
- Akira Hasegawa (jap. 長谷川 晃, Hasegawa Akira; * 17. Juni 1934 in der Präfektur Tokio) ist ein japanischer Physiker, der sich mit Plasmaphysik und optischen Solitonen beschäftigt. (de)
- 長谷川 晃（はせがわ あきら、1934年6月17日 - ）は、日本の物理学者。大阪大学名誉教授。専門は通信工学（光通信）、プラズマ物理学、地球物理学。日米関係などの社会学の著作もある。兵庫県芦屋市出身。 (ja)
- Akira Hasegawa (Japanese: 長谷川晃, Hepburn: Hasegawa Akira, born June 17, 1934 in Tokyo Prefecture) is a theoretical physicist and engineer who has worked in the US and Japan. He is known for his work in the derivation of the Hasegawa–Mima equation, which describes fundamental plasma turbulence and the consequent generation of zonal flow that controls plasma diffusion. Hasegawa also made the discovery of optical solitons in glass fibers, a concept that is essential for high speed optical communications. (en)
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- Akira Hasegawa (en)
- أكيرا هاسيغاوا (ar)
- Akira Hasegawa (de)
- 長谷川晃 (物理学者) (ja)
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