Annular vortex merging processes in non-neutral electron plasmas

@inproceedings{Kaga2015AnnularVM,
  title={Annular vortex merging processes in non-neutral electron plasmas},
  author={C. Kaga and Kiyokazu Ito and Hiroyuki Higaki and Hiromi Okamoto},
  year={2015}
}
Non-neutral electron plasmas in a uniform magnetic field are investigated experimentally as a two dimensional (2D) fluid. Previously, it was reported that 2D phase space volume increases during a vortex merging process with viscosity. However, the measurement was restricted to a plasma with a high density. Here, an alternative method is introduced to evaluate a similar process for a plasma with a low density.