Abstract
A 4-channel HCN laser scattering system has been developed and applied to the JIPP T-IIU tokamak. Main aim of this system is to study microturbulence excited in the plasma, especially in the high power ICRF heating experiment. The observed density fluctuations are in a frequency range of the electron diamagnetic drift wave and have broad frequency spectra. The main part of the wavenumber is found to satisfy the condition of\(k_ \bot \rho _i \lesssim 1\). In the heating experiments, deterioration of the energy confinement time is observed, and the density fluctuation level increases with the increase of the heating power.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
W.M. Tang, Nucl. Fusion18 (1978) 1089.
D.L. Brower, W.A. Peeles and N.C. Luhmann, Jr., Phys. Rev. Lett.55, (1985) 2579.
A. Semet, A. Mase, W.A. Peebles, N.C. Luhmann, Jr. and S. Zweben, Phys. Rev. Lett.45 (1980) 445.
T. Saito, Y. Hamada, T. Yamashita, M. Ikeda, M. Nakamura and S. Tanaka, Nucl. Fusion21 (1981) 1005.
T. Tetsuka, A. Nishizawa, T. Sakai, K. Kawahata, A. Mase, T. Tsukishima and J. Fujita, J. Phys. Soc. Jpn.52 (1983) 1242.
G. Dodel, E. Holzhauer, J. Massig, T. Vogel, P. Ignacz, ASDEX-, ICRH-, LH-, NI-, and Pellet-Teams,11th Int. Conf. on IR and MM Waves, PISA, 1986, Conference digest, p. 399.
C.M. Surko and R.E. Slusher, Phys. Rev. Lett.37, (1976) 174.
S. Okajima, K. Kawahata, T. Tetsuka, S. Kubo and J. Fujita,11th Int. Conf. on IR and MM Waves, PISA, 1986, Conference digest, p. 249.
K. Toi, T. Watari, K. Ohkubo, K. Kawahata, N. Noda, S. Tanahashi, T. Amano, R. Ando, J. Fujita, Y. Hamada, S. Hirokura, K. Ida, E. Kako, O. Kaneko, Y. Kawasumi, S. Kitagawa, T. Kuroda, K. Matsuoka, K. Matsuura, Y. Midzuno, M. Mimura, H. Naitou, A. Nishizawa, I. Ogawa, Y. Ogawa, Y. Oka, M. Okamoto, M. Ono, K. Sakurai, M. Sasao, K. Sato, K.N. Sato, Y. Taniguchi, T. Tetsuka and K. Yamazaki,in Plasma Physics and Controlled Nuclear Fusion Research (Proc. 10th Int. Conf., London, 1984) Vol. 3, IAEA, Vienna (1985) 353.
T. Tetsuka, K. Kawahata, A. Nishizawa, J. Fujita and S. Okajima, Int. J. Infrared Millim. Waves6, (1985) 729.
M. Nagatsu, I. Nishida, H. Ohnishi, T. Tsukishima, S. Okajima, K. Mizuno, K. Kawahata, T. Tetsuka and J. Fujita, Nucl. Fusion27, (1987) 753.
T. Watari, K. Ohkubo, R. Akiyama, R. Ando, D. Eckhartt, Y. Hamada, S. Hirokura, K. Ida, E. Kako, O. Kaneko, K. Kawahata, Y. Kawasumi, S. Kitagawa, T. Kuroda, K. Masai, K. Matsuoka, A. Mohri, S. Morita, M. Mugishima, N. Noda, I. Ogawa, Y. Ogawa, Y. Oka, M. Sakamoto, K. Sakurai, M. Sasao, K. Sato, K.N. Sato, S. Tanahashi, Y. Taniguchi, T. Tetsuka, K. Toi, K. Yamazaki,in Plasma Physics and Controlled Nuclear Fusion Research, (Proc. 11th Int. Conf. Kyoto, 1986) Vol. 1, IAEA, Vienna (1987) 195.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kawahta, K., Tetsuka, T., Fujita, J. et al. HCN laser scattering on the JIPP T-IIU tokamak. Int J Infrared Milli Waves 9, 655–665 (1988). https://doi.org/10.1007/BF01013418
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01013418