Published June 1980 | Version v1
Report Restricted

Mechanisms responsible for topographical changes in PLT stainless steel and graphite limiters

Creators

Description

Damage to PLT limiters used during ohmic and neutral beam heated discharges is described. The damage can be explained by the power and momentum fluxes of bulk plasma and beam ions and by disruptions. The plasma scrap-off distance inferred from the extent of the damage ranges from 5 to 30 mm and is consistent with a radially outward drift velocity of 2 x 104mm/sec. A new model of the plasma scrape-off is presented which explains the pattern and extent of the damage

Availability note (English)

MF available from INIS under the Report Number; Available from NTIS., PC A04/MF A01.

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Additional details

Publishing Information

Imprint Pagination
70 p.
Report number
PPPL--1671

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
11556606
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
DEFECTS; GRAPHITE; LIMITERS; NEUTRAL ATOM BEAM INJECTION; PHYSICAL RADIATION EFFECTS; PLT DEVICES; STAINLESS STEELS
Descriptors DEC
ALLOYS; BEAM INJECTION; CARBON; CARBON ADDITIONS; CHROMIUM ALLOYS; CLOSED PLASMA DEVICES; CORROSION RESISTANT ALLOYS; ELEMENTS; IRON ALLOYS; IRON BASE ALLOYS; NONMETALS; RADIATION EFFECTS; STEELS; THERMONUCLEAR DEVICES; TOKAMAK DEVICES; TRANSITION ELEMENT ALLOYS