Suppression of Tritium Retention in Remote Areas of ITER by Nonperturbative Reactive Gas Injection

Journal Article · Fri Oct 22 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.175006· OSTI ID:21467042

Tabares, F L; Ferreira, J A; Ramos, A ^[1]; Rooij, G van; Westerhout, J; Al, R; Rapp, J ^[2]; Drenik, A; Mozetic, M ^[3]

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1. As Euratom-Ciemat, Av Complutense 22, 28040 Madrid (Spain)
2. FOM Instituut voor Plasmafysica Rijnhuizen, EURATOM Association, TEC, PO Box 1207, 3430 BE Nieuwegein (Netherlands)
3. As Euratom-MHEST, Institut Jozef Stefan, Jamova cesta 39, 1000 Ljubljana (Slovenia)

A technique based on reactive gas injection in the afterglow region of the divertor plasma is proposed for the suppression of tritium-carbon codeposits in remote areas of ITER when operated with carbon-based divertor targets. Experiments in a divertor simulator plasma device indicate that a 4 nm/min deposition can be suppressed by addition of 1 Pa{center_dot}m{sup 3} s{sup -1} ammonia flow at 10 cm from the plasma. These results bolster the concept of nonperturbative scavenger injection for tritium inventory control in carbon-based fusion plasma devices, thus paving the way for ITER operation in the active phase under a carbon-dominated, plasma facing component background.

• OSTI ID: 21467042
• Journal Information: Physical Review Letters, Vol. 105, Issue 17; Other Information: DOI: 10.1103/PhysRevLett.105.175006; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AFTERGLOW
AMMONIA
CARBON
CONTROL
DEPOSITION
DIVERTORS
FIRST WALL
GAS INJECTION
ITER TOKAMAK
PLASMA
REMOTE AREAS
RETENTION
SIMULATORS
TRITIUM
ANALOG SYSTEMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CLOSED PLASMA DEVICES
ELEMENTS
FLUID INJECTION
FUNCTIONAL MODELS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTOR WALLS
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS
YEARS LIVING RADIOISOTOPES