Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo

被引：41

作者：

Tzeferacos, P. ^{[1
,2
]}

Rigby, A. ^{[2
]}

Bott, A. ^{[2
]}

Bell, A. R. ^{[2
]}

Bingham, R. ^{[3
,4
]}

Casner, A. ^{[5
]}

Cattaneo, F. ^{[1
]}

Churazov, E. M. ^{[6
,7
]}

Emig, J. ^{[8
]}

Flocke, N. ^{[1
]}

Fiuza, F. ^{[9
]}

Forest, C. B. ^{[10
]}

Foster, J. ^{[11
]}

Graziani, C. ^{[1
]}

Katz, J. ^{[12
]}

Koenig, M. ^{[13
]}

Li, C. -K. ^{[14
]}

Meinecke, J. ^{[2
]}

Petrasso, R. ^{[14
]}

Park, H. -S. ^{[8
]}

Remington, B. A. ^{[8
]}

Ross, J. S. ^{[8
]}

Ryu, D. ^{[15
]}

Ryutov, D. ^{[8
]}

Weide, K. ^{[1
]}

White, T. G. ^{[2
]}

Reville, B. ^{[16
]}

Miniati, F. ^{[17
]}

Schekochihin, A. A. ^{[2
]}

Froula, D. H. ^{[12
]}

Gregori, G. ^{[1
,2
]}

Lamb, D. Q. ^{[1
]}

机构：

[1] Univ Chicago, Dept Astron & Astrophys, 5640 S Ellis Ave, Chicago, IL 60637 USA

[2] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[3] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[4] Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland

[5] CEA, DAM, DIF, F-91297 Arpajon, France

[6] Max Planck Inst Astrophys, D-85741 Garching, Germany

[7] Space Res Inst IKI, Moscow 117997, Russia

[8] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[9] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[10] Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA

[11] AWE, Reading RG7 4PR, West Berks, England

[12] Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA

[13] Univ Paris VI, Ecole Polytech, CNRS, Lab Utilisat Lasers Intenses,UMR7605,CEA, Paris, France

[14] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[15] UNIST, Dept Phys, Ulsan 689798, South Korea

[16] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[17] ETH, Dept Phys, CH-8093 Zurich, Switzerland

来源：

PHYSICS OF PLASMAS | 2017年 / 24卷 / 04期

基金：

新加坡国家研究基金会; 美国国家科学基金会; 英国工程与自然科学研究理事会; 英国科学技术设施理事会;

关键词：

STAGGERED MESH SCHEME; SIMULATIONS; SATURATION; GENERATION; FLASH; INDUCTION; CLUSTERS; CRITERIA; PLASMA;

D O I：

10.1063/1.4978628

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The universe is permeated by magnetic fields, with strengths ranging from a femtogauss in the voids between the filaments of galaxy clusters to several teragauss in black holes and neutron stars. The standard model behind cosmological magnetic fields is the nonlinear amplification of seed fields via turbulent dynamo to the values observed. We have conceived experiments that aim to demonstrate and study the turbulent dynamo mechanism in the laboratory. Here, we describe the design of these experiments through simulation campaigns using FLASH, a highly capable radiation magnetohydrodynamics code that we have developed, and large-scale three-dimensional simulations on the Mira supercomputer at the Argonne National Laboratory. The simulation results indicate that the experimental platform may be capable of reaching a turbulent plasma state and determining the dynamo amplification. We validate and compare our numerical results with a small subset of experimental data using synthetic diagnostics. Published by AIP Publishing.

引用

页数：14

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