Magnetic turbulence in a table-top laser-plasma relevant to astrophysical scenarios

被引：47

作者：

Chatterjee, Gourab ^{[1
,4
]}

Schoeffler, Kevin M. ^{[2
]}

Singh, Prashant Kumar ^{[1
]}

Adak, Amitava ^{[1
]}

Lad, Amit D. ^{[1
]}

Sengupta, Sudip ^{[3
]}

Kaw, Predhiman ^{[3
]}

Silva, Luis O. ^{[2
]}

Das, Amita

Kumar, G. Ravindra ^{[1
]}

机构：

[1] Tata Inst Fundamental Res, Dept Nucl & Atom Phys, Bombay 400005, Maharashtra, India

[2] Univ Lisbon, Inst Plasmas & Fusao Nucl, Inst Super Tecn, Grp Lasers & Plasmas, P-1049001 Lisbon, Portugal

[3] Inst Plasma Res, Gandhinagar 382428, India

[4] Max Planck Inst Struct & Dynam Matter, Atomically Resolved Dynam, D-22761 Hamburg, Germany

来源：

NATURE COMMUNICATIONS | 2017年 / 8卷

基金：

欧洲研究理事会; 美国国家科学基金会;

关键词：

KINETIC-ALFVEN TURBULENCE; SHOCK-WAVES; FIELDS; AMPLIFICATION; CODE;

D O I：

10.1038/ncomms15970

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：

Turbulent magnetic fields abound in nature, pervading astrophysical, solar, terrestrial and laboratory plasmas. Understanding the ubiquity of magnetic turbulence and its role in the universe is an outstanding scientific challenge. Here, we report on the transition of magnetic turbulence from an initially electron-driven regime to one dominated by ion-magnetization in a laboratory plasma produced by an intense, table-top laser. Our observations at the magnetized ion scale of the saturated turbulent spectrum bear a striking resemblance with spacecraft measurements of the solar wind magnetic-field spectrum, including the emergence of a spectral kink. Despite originating from diverse energy injection sources (namely, electrons in the laboratory experiment and ion free-energy sources in the solar wind), the turbulent spectra exhibit remarkable parallels. This demonstrates the independence of turbulent spectral properties from the driving source of the turbulence and highlights the potential of small-scale, table-top laboratory experiments for investigating turbulence in astrophysical environments.

引用

页数：5

共 29 条

[1] Universality of Solar-Wind Turbulent Spectrum from MHD to Electron Scales [J].

Alexandrova, O. ;

Saur, J. ;

Lacombe, C. ;

Mangeney, A. ;

Mitchell, J. ;

Schwartz, S. J. ;

Robert, P. .

PHYSICAL REVIEW LETTERS, 2009, 103 (16)

[2] Measurement of the electric fluctuation spectrum of magnetohydrodynamic turbulence [J].

Bale, SD ;

Kellogg, PJ ;

Mozer, FS ;

Horbury, TS ;

Reme, H .

PHYSICAL REVIEW LETTERS, 2005, 94 (21)

[3] Two-dimensional electron magnetohydrodynamic turbulence [J].

Biskamp, D ;

Schwarz, E ;

Drake, JF .

PHYSICAL REVIEW LETTERS, 1996, 76 (08) :1264-1267

[4]

Biskamp D., 2003, Magnetohydrodynamic turbulence

[5] SPECTRUM OF KINETIC-ALFVEN TURBULENCE [J].

Boldyrev, Stanislav ;

Perez, Jean Carlos .

ASTROPHYSICAL JOURNAL LETTERS, 2012, 758 (02)

[6] Three-dimensional magnetic structures generated by the development of the filamentation (Weibel) instability in the relativistic regime [J].

Califano, F ;

Del Sarto, D ;

Pegoraro, F .

PHYSICAL REVIEW LETTERS, 2006, 96 (10)

[7] High-resolution measurements of the spatial and temporal evolution of megagauss magnetic fields created in intense short-pulse laser-plasma interactions [J].

Chatterjee, Gourab ;

Singh, Prashant Kumar ;

Adak, Amitava ;

Lad, Amit D. ;

Kumar, G. Ravindra .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2014, 85 (01)

[8] Anisotropy of Solar Wind Turbulence between Ion and Electron Scales [J].

Chen, C. H. K. ;

Horbury, T. S. ;

Schekochihin, A. A. ;

Wicks, R. T. ;

Alexandrova, O. ;

Mitchell, J. .

PHYSICAL REVIEW LETTERS, 2010, 104 (25)

[9]

Chung H. K., 2005, High Energy Density Phys, V1, P3, DOI [10.1016/j.hedp.2005.07.001, DOI 10.1016/J.HEDP.2005.07.001]

[10] Nonlocal sausage-like instability of current channels in electron magnetohydrodynamics [J].

Das, A ;

Kaw, P .

PHYSICS OF PLASMAS, 2001, 8 (10) :4518-4523

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