Magneto-Rayleigh-Taylor instability in compressible Z-pinch liner plasmas
In this paper, the characteristics of magneto-Rayleigh-Taylor（MRT） instability of liner plasmas in Mag LIF is theoretically investigated. A three-region slab model, based on ideal MHD equations, is used to derive the dispersion relation of MRT instability. The effect of compressibility on the develo...
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| Published in | Chinese physics B Vol. 26; no. 7; pp. 244 - 249 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.06.2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 |
| DOI | 10.1088/1674-1056/26/7/075202 |
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| Abstract | In this paper, the characteristics of magneto-Rayleigh-Taylor（MRT） instability of liner plasmas in Mag LIF is theoretically investigated. A three-region slab model, based on ideal MHD equations, is used to derive the dispersion relation of MRT instability. The effect of compressibility on the development of MRT instability is specially examined. It is shown that the growth rate of MRT instability in compressible condition is generally lower than that in incompressible condition in the presence of magnetic field. In the case of zero magnetic field, the growth rate in compressible assumption is approximately the same as that in incompressible assumption. Generally, MRT instability in（x, y） plane can be remarkably mitigated due to the presence of magnetic field especially for short-wavelength perturbations. Perturbations may be nearly completely mitigated when the magnetic field is increased to over 1000 T during liner implosions. The feedthrough of MRT instability in liner outer surface on inner surface is also discussed. |
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| AbstractList | In this paper, the characteristics of magneto-Rayleigh-Taylor（MRT） instability of liner plasmas in Mag LIF is theoretically investigated. A three-region slab model, based on ideal MHD equations, is used to derive the dispersion relation of MRT instability. The effect of compressibility on the development of MRT instability is specially examined. It is shown that the growth rate of MRT instability in compressible condition is generally lower than that in incompressible condition in the presence of magnetic field. In the case of zero magnetic field, the growth rate in compressible assumption is approximately the same as that in incompressible assumption. Generally, MRT instability in（x, y） plane can be remarkably mitigated due to the presence of magnetic field especially for short-wavelength perturbations. Perturbations may be nearly completely mitigated when the magnetic field is increased to over 1000 T during liner implosions. The feedthrough of MRT instability in liner outer surface on inner surface is also discussed. |
| Author | 杨学 肖德龙 丁宁 刘杰 |
| AuthorAffiliation | Institute of Applied Physics and Computational Mathematics, Beijing 100088, China Graduate School, China Academy of Engineering Physics, Beijing 100088, China HEDPS, CAPT, and CICIFSA MoE, Peking University, Beijing 100871, China |
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| CitedBy_id | crossref_primary_10_1016_j_jcp_2017_12_014 crossref_primary_10_1088_1741_4326_acedc5 crossref_primary_10_1063_1_5021505 crossref_primary_10_1088_1674_1056_ac1fd9 crossref_primary_10_1063_1_5132750 crossref_primary_10_1088_0256_307X_37_1_015201 |
| Cites_doi | 10.1063/1.1724473 10.1063/1.3680646 10.7498/aps.55.2333 10.1103/PhysRevLett.111.235005 10.1063/1.3609773 10.1103/PhysRevLett.105.185001 10.1063/1.4901197 10.1063/1.1543926 10.1017/CBO9780511807183 10.1063/1.4872331 10.1103/PhysRevLett.113.155003 10.1103/PhysRevLett.108.025003 10.1063/1.4729726 10.1103/PhysRevE.83.066405 10.1063/1.1630800 10.1063/1.3560911 10.1063/1.4938272 10.1103/PhysRevLett.117.205001 10.1016/j.mre.2016.06.001 10.1063/1.859207 10.1063/1.4904210 10.1063/1.3333505 10.1063/1.1872892 |
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| Notes | Xue Yang1,2,De-Long Xiao1,Ning Ding1,Jie Liu1,3（ 1 Institute of Applied Physics and Computational Mathematics, Beijing 100088, China ;2 Graduate School, China Academy of Engineering Physics, Beijing 100088, China ; 3 HEDPS, CAPT, and CICIFSA MoE, Peking University, Beijing 100871, China） magneto-Rayleigh-Taylor（MRT） instability; magnetized liner inertial fusion（Mag LIF）; Z-pinch; compressibility In this paper, the characteristics of magneto-Rayleigh-Taylor（MRT） instability of liner plasmas in Mag LIF is theoretically investigated. A three-region slab model, based on ideal MHD equations, is used to derive the dispersion relation of MRT instability. The effect of compressibility on the development of MRT instability is specially examined. It is shown that the growth rate of MRT instability in compressible condition is generally lower than that in incompressible condition in the presence of magnetic field. In the case of zero magnetic field, the growth rate in compressible assumption is approximately the same as that in incompressible assumption. Generally, MRT instability in（x, y） plane can be remarkably mitigated due to the presence of magnetic field especially for short-wavelength perturbations. Perturbations may be nearly completely mitigated when the magnetic field is increased to over 1000 T during liner implosions. The feedthrough of MRT instability in liner outer surface on inner surface is also discussed. 11-5639/O4 |
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| References | 11 22 12 23 13 24 Chandrasekhar S (9) 1961 14 15 16 17 18 19 1 2 3 4 5 Zhang Y (6) 2005; 55 7 8 20 10 21 |
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| Snippet | In this paper, the characteristics of magneto-Rayleigh-Taylor（MRT） instability of liner plasmas in Mag LIF is theoretically investigated. A three-region slab... |
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| SubjectTerms | MHD方程 Rayleigh Taylor Z箍缩等离子体 不可压缩 不稳定性 压缩条件 衬垫 |
| Title | Magneto-Rayleigh-Taylor instability in compressible Z-pinch liner plasmas |
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