Measurement of instability growth in a magnetized Z pinch in the finite-Larmor-radius regime.
作者： H. M. Davies , A. E. Dangor , M. Coppins , M. G. Haines
DOI: 10.1103/PHYSREVLETT.87.145004
关键词: Magnetohydrodynamics 、 Atomic physics 、 Larmor formula 、 Gyroradius 、 Pinch 、 Instability 、 Z-pinch 、 Radius 、 Condensed matter physics 、 Physics 、 Ion
摘要: The development of the m = 0 instability in a Z pinch was followed and measured growth rates compared with 2D MHD simulations. Where is valid, agree well simulation. ions are magnetized, i.e., where ion-cyclotron frequency smaller than ion-collision ratio ion Larmor radius to order 0.1, rate expected by factor 2.5. This as predicted finite-Larmor-radius theory. product wave number ka approximately 2pi same for all conditions. Perturbations large 30% were observed; no nonlinear saturation evident.
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