Outer divertor target deposited layers during reversed magnetic field operation in JET

Divertor surface temperatures are significantly affected by the presence of deposited surface layers. This phenomenon can be used to monitor deposited layer evolution on a shot-by-shot basis. It was found that during an experimental campaign where the B x del B direction was reversed that the outer target, normally an erosion zone, became a deposition zone. (c) 2004 Published by Elsevier B.V.