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Your search keyword '"Matoike, R."' showing total 9 results
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9 results on '"Matoike, R."'

2. Impact of multifold magnetic structure on spectroscopy analysis in Heliotron J based on EMC3‐EIRENE simulation

Author

Cai, F., primary, Kado, S., additional, Kawamura, G., additional, Feng, C., additional, Matoike, R., additional, Miyashita, A., additional, Ohshima, S., additional, Minami, T., additional, Inagaki, S., additional, Kin, F., additional, Kobayashi, S., additional, Ishizawa, A., additional, Nakamura, Y., additional, Okada, H., additional, Konoshima, S., additional, Mizuuchi, T., additional, Feng, Y., additional, Frerichs, H., additional, and Nagasaki, K., additional

Published
2024
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3. Development and initial results of 320 GHz interferometer system in Heliotron J

Author

Zhang, P., primary, Ohshima, S., additional, Zhao, H., additional, Deng, C., additional, Kobayashi, S., additional, Kado, S., additional, Minami, T., additional, Matoike, R., additional, Miyashita, A., additional, Iwata, A., additional, Kondo, Y., additional, Qiu, D., additional, Wang, C., additional, Luo, M., additional, Konoshima, S., additional, Inagaki, S., additional, Okada, H., additional, Mizuuchi, T., additional, and Nagasaki, K., additional

Published
2022
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4. Numerical analysis of heat load distribution in Heliotron J with magnetic field tracing and plasma transport modeling

Author

Matoike, R, primary, Kawamura, G, additional, Ohshima, S, additional, Suzuki, Y, additional, Kobayashi, M, additional, Masuzaki, S, additional, Kobayashi, S, additional, Kado, S, additional, Minami, T, additional, Okada, H, additional, Mizuuchi, T, additional, Konoshima, S, additional, Feng, Y, additional, Frerichs, H, additional, and Nagasaki, K, additional

Published
2021
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6. Isotope effect on zonal flow and its configuration dependence in low-density electron-cyclotron-resonance heated plasmas in Heliotron J

Author

Ohshima, S, primary, Okada, H, additional, Zang, L, additional, Kobayashi, S, additional, Minami, T, additional, Kado, S, additional, Adulsiriswad, P, additional, Qiu, D, additional, Matoike, R, additional, Luo, M, additional, Zhang, P, additional, Miyashita, A, additional, Motoshima, M, additional, Nakamura, Y, additional, Konoshima, S, additional, Mizuuchi, T, additional, and Nagasaki, K, additional

Published
2021
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8. Development of a multi-channel 320 GHz interferometer for high density plasma measurement in Heliotron J

Author

Ohshima, S., primary, Zhang, P., additional, Kume, H., additional, Deng, C., additional, Miyashita, A., additional, Kobayashi, S., additional, Okada, H., additional, Minami, T., additional, Kado, S., additional, Adulsiriswad, P., additional, Qiu, D., additional, Luo, M., additional, Matoike, R., additional, Suzuki, T., additional, Konoshima, S., additional, Mizuuchi, T., additional, and Nagasaki, K., additional

Published
2021
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9. Spatially resolved measurement of helium atom emission line spectrum in scrape-off layer of Heliotron J by near-infrared Stokes spectropolarimetry.

Author

Chatani T, Shikama T, Ueno Y, Kado S, Kawazome H, Minami T, Matoike R, Murakumo M, Kobayashi S, Ohshima S, Iwata A, Oishi T, Ishizawa A, Nakamura Y, Okada H, Konoshima S, Mizuuchi T, Nagasaki K, and Hasuo M

Abstract

For plasma spectroscopy, Stokes spectropolarimetry is used as a method to spatially invert the viewing-chord-integrated spectrum on the basis of the correspondence between the given magnetic field profile along the viewing chord and the Zeeman effect appearing on the spectrum. Its application to fusion-related toroidal plasmas is, however, limited owing to the low spatial resolution as a result of the difficulty in distinguishing between the Zeeman and Doppler effects. To resolve this issue, we increased the relative magnitude of the Zeeman effect by observing a near-infrared emission line on the basis of the greater wavelength dependence of the Zeeman effect than of the Doppler effect. By utilizing the increased Zeeman effect, we are able to invert the measured spectrum with a high spatial resolution by Monte Carlo particle transport simulation and by reproducing the measured spectra with the semiempirical adjustment of the recycling condition at the first walls. The inversion result revealed that when the momentum exchange collisions of atoms are negligible, the velocity distribution of core-fueling atoms is mainly determined by the initial distribution at the time of recycling. The inversion result was compared with that obtained using a two-point emission model used in previous studies. The latter approximately reflects the parameters of atoms near the emissivity peak., (© 2022. The Author(s).)

Published
2022
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