The measurement of local ion temperature with SLOT and DHT antenna on Hanbit mirror device
Abstract
The spectroscopic method to obtain the local spectrum in the radial direction is described using the five line integrated spectra. These spectra are obtained from Hanbit mirror plasma using optical chords installed in the horizontal direction of central cell chamber. From these, the local impurity intensity profiles and ion temperature are obtained by applying the deconvolution fitting method. The Hanbit plasma is produced with two different types of rf antenna, one is SLOT antenna for electron heating and the other is DHT for ion heating. We compare the ion temperature for two types of antenna. In order to compensate for the instrumental broadening of spectrometer, a slit function obtained from the low pressure mercury line 253.65 nm is used. The O II 441.491 nm and C III 229.68 nm line from the Hanbit central cell plasma is selected as sample data. We applied the deconvolution fitting method using a slit function to eliminate the instrumental broadening.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2000
- Bibcode:
- 2000APS..DPPCP1069N