Excitation of the Alfvén Ion Cyclotron Mode due to Anisotropic Heating

Alfven ion cyclotron (AIC) mode is studied in the plasmas with two ion temperature components. In the GAMMA 10 tandem mirror, plasmas with the strong temperature anisotropy are produced by ICRF heating. The plasma with two ion temperature components has been observed under the application of ICRF heating. To evaluate the AIC mode in GAMMA 10, the dispersion relation in a hot plasma which has two ion temperature components was solved. The frequency region of the AIC mode excited in the plasma with two ion components is expanded and the growth rate becomes large.