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Evaluation of an Oxygen Transport Coefficient in the Aditya Tokamak Using the Radial Profile of O4+ Emissivity and the Importance of Atomic Data Used Therein
Open AccessArticle

Poloidal Rotation and Edge Ion Temperature Measurements Using Spectroscopy Diagnostic on Aditya-U Tokamak

1
Pandit Deendayal Petroleum University, Raisan, Gandhinagar 382 421, India
2
Institute for Plasma Research, Bhat, Gandhinagar 382 428, India
3
The National Institute of Engineering, Mysuru 570 008, India
*
Author to whom correspondence should be addressed.
Atoms 2019, 7(3), 93; https://doi.org/10.3390/atoms7030093
Received: 30 June 2019 / Revised: 7 September 2019 / Accepted: 16 September 2019 / Published: 19 September 2019
(This article belongs to the Special Issue Plasma Spectroscopy in the Presence of Magnetic Fields)
The impurity ion poloidal rotation and ion temperature from the Aditya-U tokamak plasma have been measured using a high-resolution spectroscopic diagnostic. It comprises of a high resolution, 1 m, f/8.7, Czerny-Turner configuration spectrometer along with charge coupled device (CCD) detector. The system monitors the spectral line emission of C2+ impurity ions at 464.74 nm from the top port of the Aditya-U vacuum vessel with the lines of sight covering the plasma minor radius from r = 11.55 cm to 21.55 cm. The impurity ion poloidal rotation velocity and temperature have been estimated using the Doppler shift and Doppler broadening of the spectral lines respectively. The maximum poloidal rotation at a radial location of 21.55 cm in the edge of the plasma during the plasma current flat top was observed to be ~4 km/s for the analyzed discharges and the ion temperatures measured in the edge were in the range of 32–40 eV. View Full-Text
Keywords: poloidal rotation; plasma rotation; plasma spectroscopy poloidal rotation; plasma rotation; plasma spectroscopy
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Shukla, G.; Chowdhuri, M.B.; Shah, K.; Yadava, N.; Manchanda, R.; Jadeja, K.A.; Tanna, R.L.; K., B.K.M.; Ghosh, J.; Aditya-U Team. Poloidal Rotation and Edge Ion Temperature Measurements Using Spectroscopy Diagnostic on Aditya-U Tokamak. Atoms 2019, 7, 93.

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