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The Subaru Seminar is usually held in Room 104 of the Hilo Base Facility, adjacent to the main lobby. Everyone is welcome to attend. If you are interested in giving a seminar, please contact Subaru seminar organizers (Tomonori Usuda, Kumiko S. Usuda, Masayuki Akiyama) by email : sseminar_at_subaru.naoj.org (please change"_at" to @).

June 26, Monday at 11:00am

" Plasma diagnostics of non-equilibrium plasmas for Solar-B observations and laboratory plasmas (Large Helical Device) "

Takako Kato

(National Institute for Fusion Science)


Solar-B is a satellite scheduled to be launched in September 2006. It is intended to observe the Sun to provide information about the coronal heating mechanism. An EUV Imaging Spectrometer (EIS) will be mounted in Solar-B and it will record EUV spectra in the wavelength ranges 170 - 210A and 250 - 290A. In these wavelength ranges we expect to measure various kinds of Fe ions (Fe IX to Fe XXIV) which exist from the Solar transition region to the corona. In order to make a non equilibrium model for these iron spectra in the Sun, we study EUV spectra from the Large Helical Device (LHD) in our Institute. Fe ion emission from LHD is also found to be in non-equilibrium. We measured Fe ion spectra from LHD and have identified spectra from Fe VIII to Fe XXIV. The first results from LHD in this wavelength region will be presented.


Seminars are also held at JAC, CFHT, and IfA.



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