2-DIMENSIONAL IMAGING X-RAY SPECTROMETER FOR PLASMA DIAGNOSTICS

A two-dimensional imaging soft X-ray monochromator is now under develo pment. The main components of this spectrometer are a channel plate co llimator (CPC) and multilayer mirrors, We have applied this monochroma tor to obtain soft X-ray images of GAMMA10 tandem mirror plasmas. In o rder to obtain clear images in a low energy X-ray regime, we have util ized and tested a focusing effect of the CPC. Ray-trace simulations we re carried out under the same conditions as the experiments. After com parison of these results, we have confirmed that the focusing effect o f the CPC is useful in practical use. Monochromatized two-dimensional soft X-ray images have been successfully taken on the tandem mirror ex periment. (C) 1997 Elsevier Science S.A.