Noble gas pumping by the TFTR graphite limiter
Conference
·
OSTI ID:10140214
The TFTR limiter is graphite. It is possible to decrease the amount of D trapped in the limiter by making plasma discharges with gas injected only as a prefill. When the limiter is deuterium depleted well enough by this technique for supershots (with R{sub D} {approximately} 0.5 {minus} 0.6) it pumps noble gases. The effective confinement time {tau}{sub p}* ranges from {le} 1 s for He down to 0.08 s for Kr. These noble gases escape from the limiter slowly after the run. The partial pressure of Ar and Ne decay with time-constants of several hours, and the data for Ar show evidence of two trapping sites.
- Research Organization:
- Princeton Univ., NJ (United States). Plasma Physics Lab.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 10140214
- Report Number(s):
- PPPL-CFP-2605; CONF-920311-4; ON: DE92012669
- Resource Relation:
- Conference: 10. international conference on plasma-surface interactions in controlled fusion devices,Monterey, CA (United States),30 Mar - 3 Apr 1992; Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
Similar Records
Noble gas pumping by the TFTR graphite limiter
High performance deuterium-tritium plasmas in TFTR
Overview of D-T results from TFTR
Conference
·
Wed Jan 01 00:00:00 EST 1992
·
OSTI ID:10140214
High performance deuterium-tritium plasmas in TFTR
Conference
·
Wed Mar 01 00:00:00 EST 1995
·
OSTI ID:10140214
Overview of D-T results from TFTR
Technical Report
·
Sun Oct 01 00:00:00 EDT 1995
·
OSTI ID:10140214