Experimental Studies of Magnetically Driven Plasma Jets
Experimental Studies of Magnetically Driven Plasma Jets
复制标题
磁驱动等离子射流的实验研究
DOI：
10.1007/s10509-010-0543-3
复制
发表时间：
2010
影响因子：
1.9
通讯作者：
Suzuki-Vidal F
中科院分区：
文献类型：
--
作者：
Suzuki-Vidal F
我们介绍了由MAGPIE发电机产生的1.5 MA， 250 ns电流产生的环形磁场在压力驱动下形成超音速辐射冷却射流的实验结果。实验中产生的射流形态与天体物理射流场景有关，其中磁腔轴上的射流在向周围介质扩展时被环形磁场校准。实验中的射流与原恒星射流具有相似的马赫数、等离子体β和冷却参数。此外，雷诺数、磁雷诺数和佩雷特数比单位大得多，这使得实验可以扩展到天体物理流。实验配置允许产生偶发性磁腔，这表明源附近的周期性波动可能是在天体物理喷流中观察到的一些可变性的原因。在我们的实验中，提出并讨论了射流的动能、磁场和坡印廷能的初步测量结果，以及它们的温度和捕获的环形磁场的估计。
We present experimental results on the formation of supersonic, radiatively cooled jets driven by pressure due to the toroidal magnetic field generated by the 1.5 MA, 250 ns current from the MAGPIE generator. The morphology of the jet produced in the experiments is relevant to astrophysical jet scenarios in which a jet on the axis of a magnetic cavity is collimated by a toroidal magnetic field as it expands into the ambient medium. The jets in the experiments have similar Mach number, plasma beta and cooling parameter to those in protostellar jets. Additionally the Reynolds, magnetic Reynolds and Peclet numbers are much larger than unity, allowing the experiments to be scaled to astrophysical flows. The experimental configuration allows for the generation of episodic magnetic cavities, suggesting that periodic fluctuations near the source may be responsible for some of the variability observed in astrophysical jets. Preliminary measurements of kinetic, magnetic and Poynting energy of the jets in our experiments are presented and discussed, together with estimates of their temperature and trapped toroidal magnetic field.
登录
查看更多内容
DOI：
10.1088/0004-637x/691/2/l147
发表时间：
2008-11
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Andrea Ciardi;S. Lebedev;A. Frank;F. Suzuki-Vidal;G. Hall;S. Bland;A. Harvey-Thompson;E. Blackman;M. M. L. D. Paris-M.;Lerma;France Imperial College;B. Laboratory;U. Rochester;D. Physics;Astronomy;Usa University of Heidelberg;Centre for Astronomy Heidelberg;Germany. Present address Ecole Normale Superieure;Laboratoire de Radioastronomie;France.
通讯作者：
Andrea Ciardi;S. Lebedev;A. Frank;F. Suzuki-Vidal;G. Hall;S. Bland;A. Harvey-Thompson;E. Blackman;M. M. L. D. Paris-M.;Lerma;France Imperial College;B. Laboratory;U. Rochester;D. Physics;Astronomy;Usa University of Heidelberg;Centre for Astronomy Heidelberg;Germany. Present address Ecole Normale Superieure;Laboratoire de Radioastronomie;France.
影响因子：
1.9
作者：
F. Suzuki-Vidal;S. Lebedev;Andrea Ciardi;S. Bland;J. Chittenden;G. Hall;A. Harvey-Thompson;A. Marocchino;C. Ning;C. Stehlé;A. Frank;E. Blackman;S. Bott;T. Ray
通讯作者：
F. Suzuki-Vidal;S. Lebedev;Andrea Ciardi;S. Bland;J. Chittenden;G. Hall;A. Harvey-Thompson;A. Marocchino;C. Ning;C. Stehlé;A. Frank;E. Blackman;S. Bott;T. Ray
影响因子：
2.2
作者：
Ciardi, A.;Lebedev, S. V.;Stehle, C.
通讯作者：
Stehle, C.
线径和附加轴向磁场对径向线阵列 $Z$ 箍缩动力学的影响
影响因子：
1.5
作者：
F. Suzuki;S. Lebedev;S. Bland;G. Hall;A. Harvey;J. Chittenden;A. Marocchino;S. Bott;J. Palmer;Andrea Ciardi
通讯作者：
Andrea Ciardi