TY - JOUR
T1 - Experimental evidence of a zonal magnetic field in a toroidal plasma
AU - Fujisawa, A.
AU - Itoh, K.
AU - Shimizu, A.
AU - Nakano, H.
AU - Ohshima, S.
AU - Iguchi, H.
AU - Matsuoka, K.
AU - Okamura, S.
AU - Minami, T.
AU - Yoshimura, Y.
AU - Nagaoka, K.
AU - Ida, K.
AU - Toi, K.
AU - Takahashi, C.
AU - Kojima, M.
AU - Nishimura, S.
AU - Isobe, M.
AU - Suzuki, C.
AU - Akiyama, T.
AU - Nagashima, Y.
AU - Itoh, Sanae
AU - Diamond, P. H.
PY - 2007/4/18
Y1 - 2007/4/18
N2 - A zonal magnetic field is found in a toroidal plasma. The magnetic field has a symmetric bandlike structure, which is uniform in the toroidal and poloidal directions and varies radially with a finite wavelength of mesoscale, which is analogous to zonal flows. A time-dependent bicoherence analysis reveals that the magnetic field should be generated by the background plasma turbulence. The discovery is classified as a new kind of phenomenon of structured magnetic field generation, giving insight into phenomena such as dipole field generation in rotational planets.
AB - A zonal magnetic field is found in a toroidal plasma. The magnetic field has a symmetric bandlike structure, which is uniform in the toroidal and poloidal directions and varies radially with a finite wavelength of mesoscale, which is analogous to zonal flows. A time-dependent bicoherence analysis reveals that the magnetic field should be generated by the background plasma turbulence. The discovery is classified as a new kind of phenomenon of structured magnetic field generation, giving insight into phenomena such as dipole field generation in rotational planets.
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U2 - 10.1103/PhysRevLett.98.165001
DO - 10.1103/PhysRevLett.98.165001
M3 - Article
AN - SCOPUS:34247208585
VL - 98
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 16
M1 - 165001
ER -