Speaker
Prof.
Hyyong Suk
(GIST)
Description
There are some diagnostic methods for fusion plasma, but we still need to develop new and better diagnostic methods. In this research, we developed a new way for plasma density measurement, where strong THz (tera-hertz) waves were produced by focusing femto-second laser pulses in gas and they were used for plasma density diagnostics. The strong THz pulses were sent through an ICP (inductively-coupled plasma) source, where the 13.56 MHz RF can produce fusion plasma densities of the order of 10$^{13}$ cm$^{-3}$, and analysis of the transmitted THz waves can give the information for the plasma density. In this way, we successfully measured the plasma density experimentally and developed a simple model to explain the plasma. In this presentation, the new THz-based plasma diagnostic method is introduced and some recent results will be shown.
Primary author
Prof.
Hyyong Suk
(GIST)
Co-authors
Dr
Dogeun Jang
(GIST)
Ms
Jinju Kim
(GIST)
Dr
Keekon Kang
(GIST)
