An electrostatic electron energy analyser has been inserted for the first time in the outer region of the RFX reversed-field pinch experiment, in order to investigate and characterize the presence of a superthermal electron population. It has been found that these electrons carry most of the current density parallel to the magnetic field. The time evolution during a single discharge of the superthermal electrons current density and parallel temperature indicates that the distortion of the electron distribution function is stationary during the plasma current flat-top phase. The dependence of the superthermal temperature on the plasma parameters has been investigated by varying the plasma density, and a relationship with the ratio of the on-axis applied electric field to the critical electric field for runaway generation has been identified. © 1997 IOP Publishing Ltd.
|Pages (from-to)||1915 - 1927|
|Number of pages||13|
|Journal||Plasma Physics and Controlled Fusion|
|Publication status||Published - 1997|
All Science Journal Classification (ASJC) codes
- Nuclear Energy and Engineering
- Condensed Matter Physics
Yagi, Y., Antoni, V., Bagatin, M., Desideri, D., Martines, E., Serianni, G., & Vallone, F. (1997). Measurement of superthermal electron flow and temperature in a reversed-field pinch experiment by an electrostatic electron energy analyser. Plasma Physics and Controlled Fusion, 39(12), 1915 - 1927.