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Title: Resistive wall modes in the Reversatron II RFP

Conference ·
OSTI ID:5727363

The Reversatron 2 RFP (R/a=50cm/8cm) has been operated with interchangeable shells to investigate resistive wall modes. Shell penetration times are 610, 100, and 4 {mu}sec (no shell). With the 610 {mu}sec shell, the plasma current is {le} 65 kA and the duration {le} 550 {mu}sec. With no shell, helium discharges are more resistive and hydrogen discharges cannot be sustained. An m=1, n=-6 mode resonant on axis grows to a relative amplitude of 20% during the setting-up phase. With the 100{mu}sec shell, deuterium discharges can be sustained but are degraded due to a broad spectrum of modes. The increased plasma resistance can be correlated with the flux intersecting the wall. 21 refs., 12 figs.

Research Organization:
Colorado Univ., Boulder, CO (USA)
Sponsoring Organization:
USDOE; USDOE, Washington, DC (USA)
DOE Contract Number:
FG02-87ER53244
OSTI ID:
5727363
Report Number(s):
CONF-9010230-8; ON: DE91014304
Resource Relation:
Conference: International school of plasma physics, Varenna (Italy), 15-19 Oct 1990
Country of Publication:
United States
Language:
English