Abstract
In the GAMMA 10 central ECRH experiments, the electron heating estimated from the soft X-ray (SX) measurement was observed with any X-mode ratio. As increasing X-mode ratio from 0% to 100%, the SX power signal increased from about 2 times to about 3 times. And the Diamagnetic signal at the central cell (DMCC) increase is the maximum (+5%) with 100% X-mode. That is, 100% X-mode is the appropriate injecting polarization as expected. The DMCC decrease was observed except with 100% X-mode though electron heating was observed. And as decreasing X-mode ratio, the peak intensity of SX radial profile shifted from the center to the South and the asymmetric electron heating was observed. And as decreasing X-mode ratio, the peripheral ion loss seems to increase.
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