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

Authors :
Yagi, Y
Antoni, V
Bagatin, M
Desideri, D
Martines, E
Serianni, G
Vallone, F
Yagi Y
Antoni V
Bagatin M
Desideri D
Martines E
Serianni G
Vallone F
Yagi, Y
Antoni, V
Bagatin, M
Desideri, D
Martines, E
Serianni, G
Vallone, F
Yagi Y
Antoni V
Bagatin M
Desideri D
Martines E
Serianni G
Vallone F
Publication Year :
1997

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.

Details

Database :
OAIster
Notes :
STAMPA, English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1313115284
Document Type :
Electronic Resource