A Concept of Cross-Ferroic Plasma Turbulence

被引：70

作者：

Inagaki, S. ^{[1
,2
]}

Kobayashi, T. ^{[3
]}

Kosuga, Y. ^{[4
]}

Itoh, S. -I. ^{[1
,2
]}

Mitsuzono, T. ^{[5
]}

Nagashima, Y. ^{[1
,2
]}

Arakawa, H. ^{[6
]}

Yamada, T. ^{[7
]}

Miwa, Y. ^{[5
]}

Kasuya, N. ^{[1
,2
]}

Sasaki, M. ^{[1
,2
]}

Lesur, M. ^{[1
]}

Fujisawa, A. ^{[1
,2
]}

Itoh, K. ^{[2
,3
]}

机构：

[1] Kyushu Univ, Res Inst Appl Mech, 6-1 Kasuga Koen, Kasuga, Fukuoka 8168580, Japan

[2] Kyushu Univ, Res Ctr Plasma Turbulence, 6-1 Kasuga Koen, Kasuga, Fukuoka 8168580, Japan

[3] Natl Inst Nat Sci, Natl Inst Fus Sci, 322-6 Oroshicho, Toki, Gifu 5095292, Japan

[4] Kyushu Univ, Inst Adv Study, Higashi Ku, 6-10-1 Hakozaki, Fukuoka 8128581, Japan

[5] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, 6-1 Kasuga Koen, Kasuga, Fukuoka 8168580, Japan

[6] Teikyo Univ, 6-22 Misaki Machi, Omuta City, Fukuoka 8368505, Japan

[7] Kyushu Univ, Fac Arts & Sci, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

关键词：

TRANSPORT; ELECTRON; FLOWS;

D O I：

10.1038/srep22189

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The variety of scalar and vector fields in laboratory and nature plasmas is formed by plasma turbulence. Drift-wave fluctuations, driven by density gradients in magnetized plasmas, are known to relax the density gradient while they can generate flows. On the other hand, the sheared flow in the direction of magnetic fields causes Kelvin-Helmholtz type instabilities, which mix particle and momentum. These different types of fluctuations coexist in laboratory and nature, so that the multiple mechanisms for structural formation exist in extremely non-equilibrium plasmas. Here we report the discovery of a new order in plasma turbulence, in which chained structure formation is realized by cross-interaction between inhomogeneities of scalar and vector fields. The concept of cross-ferroic turbulence is developed, and the causal relation in the multiple mechanisms behind structural formation is identified, by measuring the relaxation rate and dissipation power caused by the complex turbulence-driven flux.

引用

页数：6

共 21 条

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