DocumentCode :
833445
Title :
Experimental and Theoretical Investigation of the Preglow in ECRIS
Author :
Izotov, Ivan V. ; Sidorov, Alexander V. ; Skalyga, Vadim A. ; Zorin, Vladimir G. ; Lamy, Thierry ; Latrasse, Louis ; Thuillier, Thomas
Author_Institution :
Inst. of Appl. Phys., Russian Acad. of Sci., Nizhny Novgorod
Volume :
36
Issue :
4
fYear :
2008
Firstpage :
1494
Lastpage :
1501
Abstract :
The experimental study of the pulsed-mode operation of the PHOENIX-V2 electron cyclotron resonance ion source at 28 GHz has clearly demonstrated, when increasing the repetition rate of the high-frequency power injection at frequencies higher than 1 Hz, the reality of a transient current peak occurring at the very beginning of the plasma discharge. This regime was named Preglow as an explicit reference to the classical Afterglow occurring at the microwave pulse end. After the transient Preglow peak, the plasma regime relaxes to the classical steady-state one. Experimental argon pulses for charge states from 2+ to 8+ are presented. The current observed during the Preglow peak can reach intensities on the order of 1 mA for low charge states (Ar4+). A zero-dimension theoretical model of electron cyclotron resonance (ECR) gas breakdown in a magnetic trap is presented in detail. Results of the simulation are compared with the experimental Preglow peaks and discussed.
Keywords :
afterglows; cyclotron resonance; high-frequency discharges; ion sources; magnetic traps; plasma simulation; plasma sources; ECRIS; PHOENIX-V2 electron cyclotron resonance ion source; afterglow; charge states; electron cyclotron resonance gas breakdown; frequency 28 GHz; high-frequency power injection; magnetic trap; plasma discharge; pulsed-mode operation; transient Preglow peak; Argon; Cyclotrons; Electric breakdown; Electrons; Fault location; Frequency; Ion sources; Magnetic resonance; Plasma sources; Steady-state; Cyclotron resonance; gas discharges; ion accelerators; ion sources; ionization; modeling; particle beam bunching; plasma confinement; plasma properties;
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/TPS.2008.927292
Filename :
4599019
Link To Document :
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