Measurement of superthermal electron flow and temperature in a reversed-field pinch experiment by an electrostatic electron energy analyser

Y. Yagi, V. Antoni, M. Bagatin, D. Desideri, E. Martines, G. Serianni, F. Vallone

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Abstract

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.
Original languageEnglish
Pages (from-to)1915 - 1927
Number of pages13
JournalPlasma Physics and Controlled Fusion
Volume39
Issue number12
Publication statusPublished - 1997
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

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.