Abstract
We have shown that a current-carrying plasma loop can be heated by magnetic pinch driven by the pressure imbalance between inside and outside the loop, using a 3-dimensional electromagnetic (EM) particle code. Both electrons and ions in the loop can be heated in the direction perpendicular to the ambient magnetic field, therefore the perpendicular temperature can be increased about 10 times compared with the parallel temperature. This temperature anisotropy produced by the magnetic pinch heating can induce a plasma instability, by which high-frequency electromagnetic waves can be excited. The plasma current which is enhanced by the magnetic pinch can also excite a kinetic kink instability, which can heat ions perpendicular to the magnetic field. The heating mechanism of ions as well as the electromagnetic emission could be important for an understanding of the coronal loop heating and the electromagnetic wave emissions from active coronal regions.
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References
Beaufume, P., Coppi, B. and Golub, L.: 1992,Astrophys. J. 393, 396.
Buneman, O.: 1992, Proceeding of ISSS-4, Kyoto, Japan.
Buneman, O., Neubert, T., and Nishikawa, K.-I.: 1992,IEEE Tran. Plasma Sci. 20, 810.
De Jager, C., Inda-Koide, M., Koide, S., and Sakai, J. I.: 1994,Solar Phys., submitted.
Fushiki, T. and Sakai, J. I.: 1994,Solar Phys. 150, 117.
Golub, L., Herant, M., Kalata, K., Lovas, I., Nystrom, G., Pardo, F., Spiller, and Wilczynski, J.: 1990,Nature 344, 842.
Inda-Koide, M., Sakai, J. I., Koide, S., Zhao, J., Shimizu, T., Sakao, T., and Kosugi, T.: 1994,Publ. Astron. Soc. Japan, submitted.
Kuperus, M., Ionson, J. A., and Spicer, D. S.: 1981,Ann. Rev. Astron. Astrophys. 19, 7.
Lindman, E. L.: 1975,J. Comput. Phys. 18, 66.
Mikhailovski, A. B.: 1975,Rev. Plasma Phys. 6, 77.
Narain, U. and Ulmschneider, P.: 1990,Space Sci. Rev. 54, 377.
Nishikawa, K. I., Buneman, O., and Neubert, T.: 1993,Geophys. Res., submitted.
Nishikawa, K. I., Sakai, J. I., Zhao, J., Neubert, T., and Buneman, O.: 1994,Astrophys. J., in press.
Parker, E. N.: 1988,Astrophys. J. 330, 474.
Sakai, J. I.: 1983,Solar Phys. 84, 109.
Sakai, J. I. and Fushiki, T.: 1994,Solar Phys., submitted.
Shimizu, T., Tsuneta, S., Acton, L. W., Lemen, J. R., and Uchida, Y.: 1992,Publ. Astron. Soc. Japan 44, L147.
Zhao, J., Sakai, J. I., and Nishikawa, K. I.: 1994,Solar Phys., submitted.
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Sakai, J.I., Zhao, J. & Nishikawa, K.I. Loop heating by D.C. electric current and electromagnetic wave emissions simulated by 3-D EM particle code. Sol Phys 154, 97–121 (1994). https://doi.org/10.1007/BF00676779
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DOI: https://doi.org/10.1007/BF00676779