Understanding the oblate shape of electron holes in magnetized plasmas

Scilight ◽  
2021 ◽  
Vol 2021 (7) ◽  
pp. 071105
Author(s):  
Matthew Ishimaru
Keyword(s):  
Magnetized Plasmas ◽  
Oblate Shape ◽  
Electron Holes

Direct imaging of charge transfer

1996 ◽  
Vol 54 ◽  
pp. 680-681
Author(s):  
Yimei Zhu ◽  
J. Tafto
Keyword(s):  
Charge Transfer ◽  
Electron Diffraction ◽  
Scattering Amplitude ◽  
High Temperature Superconductors ◽  
Charge Carriers ◽  
Image Charge ◽  
Net Charge ◽  
Long Time ◽  
Electron Holes ◽  
First Time

The electron holes confined to the CuO2-plane are the charge carriers in high-temperature superconductors, and thus, the distribution of charge plays a key role in determining their superconducting properties. While it has been known for a long time that in principle, electron diffraction at low angles is very sensitive to charge transfer, we, for the first time, show that under a proper TEM imaging condition, it is possible to directly image charge in crystals with a large unit cell. We apply this new way of studying charge distribution to the technologically important Bi2Sr2Ca1Cu2O8+δ superconductors.Charged particles interact with the electrostatic potential, and thus, for small scattering angles, the incident particle sees a nuclei that is screened by the electron cloud. Hence, the scattering amplitude mainly is determined by the net charge of the ion. Comparing with the high Z neutral Bi atom, we note that the scattering amplitude of the hole or an electron is larger at small scattering angles. This is in stark contrast to the displacements which contribute negligibly to the electron diffraction pattern at small angles because of the short g-vectors.

scholarly journals Effects of plasma turbulence on the nonlinear evolution of magnetic island in tokamak

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Minjun J. Choi ◽  
Lāszlo Bardōczi ◽  
Jae-Min Kwon ◽  
T. S. Hahm ◽  
Hyeon K. Park ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Nonlinear Evolution ◽  
Plasma Turbulence ◽  
Magnetized Plasmas ◽  
Tokamak Plasmas ◽  
Magnetic Islands ◽  
Magnetic Island ◽  
Reconnection Site ◽  
Ambient Turbulence

AbstractMagnetic islands (MIs), resulting from a magnetic field reconnection, are ubiquitous structures in magnetized plasmas. In tokamak plasmas, recent researches suggested that the interaction between an MI and ambient turbulence can be important for the nonlinear MI evolution, but a lack of detailed experimental observations and analyses has prevented further understanding. Here, we provide comprehensive observations such as turbulence spreading into an MI and turbulence enhancement at the reconnection site, elucidating intricate effects of plasma turbulence on the nonlinear MI evolution.

scholarly journals Blob motion and control in simple magnetized plasmas

2011 ◽  
Vol 18 (5) ◽  
pp. 055901 ◽  
Author(s):  
C. Theiler ◽  
I. Furno ◽  
A. Fasoli ◽  
P. Ricci ◽  
B. Labit ◽  
...  
Keyword(s):  
Magnetized Plasmas ◽  
And Control

scholarly journals Potential vorticity transport in weakly and strongly magnetized plasmas

2021 ◽  
Vol 28 (4) ◽  
pp. 042301
Author(s):  
Chang-Chun Chen ◽  
Patrick H. Diamond ◽  
Rameswar Singh ◽  
Steven M. Tobias
Keyword(s):  
Potential Vorticity ◽  
Magnetized Plasmas ◽  
Vorticity Transport

On powerful electron beam relaxation in magnetized plasmas

1987 ◽  
Vol 121 (4) ◽  
pp. 178-181
Author(s):  
M.A. Berezovskii ◽  
A.I. Dyachenko ◽  
I.V. Petrov ◽  
A.N. Pushkarev ◽  
A.M. Rubenchik
Keyword(s):  
Electron Beam ◽  
Magnetized Plasmas ◽  
Powerful Electron
Sign in / Sign up

Export Citation Format

Share Document