تقرير
Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo
| العنوان: | Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo |
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| المؤلفون: | Tzeferacos, P., Rigby, A., Bott, A., Bell, A. R., Bingham, R., Casner, A., Cattaneo, F., Churazov, E. M., Emig, J., Flocke, N., Fiuza, F., Forest, C. B., Foster, J., Graziani, C., Katz, J., Koenig, M., Li, C. -K., Meinecke, J., Petrasso, R., Park, H. -S., Remington, B. A., Ross, J. S., Ryu, D., Ryutov, D., Weide, K., White, T. G., Reville, B., Miniati, F., Schekochihin, A. A., Froula, D. H., Gregori, G., Lamb, D. Q. |
| سنة النشر: | 2017 |
| المجموعة: | Astrophysics Physics (Other) |
| مصطلحات موضوعية: | Physics - Plasma Physics, Astrophysics - Astrophysics of Galaxies |
| الوصف: | 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 Argonne National Laboratory. The simulation results indicate that the experimental platform may be capable of reaching a turbulent plasma state and study dynamo amplification. We validate and compare our numerical results with a small subset of experimental data using synthetic diagnostics. Comment: Accepted for publication on Physics of Plasmas, 15 pages 12 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1063/1.4978628 |
| URL الوصول: | http://arxiv.org/abs/1702.03015 |
| رقم الأكسشن: | edsarx.1702.03015 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1063/1.4978628 |
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