Preliminary computation of the gap eigenmode of shear Alfvén waves on the LAPD<xref rid="cpb_27_12_125201_fn1" ref-type="fn">*</xref><fn id="cpb_27_12_125201_fn1"><label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 11405271), the China Postdoctoral Science Foundation (Grant No. 2017M612901), the Fund from Chongqing Science and Technology Commission (Grant No. cstc2017jcyjAX0047), Chongqing Postdoctoral Special Foundation (Grant No. Xm2017109), the Fundamental Research Funds for Central Universities, China (Grant No. YJ201796), the Pre-research Key Laboratory Fund for Equipment (Grant No. 61422070306), and the Fund from the Laboratory of Advanced Space Propulsion (Grant No. LabASP-2017-10).</p></fn>

Preliminary computation of the gap eigenmode of shear Alfvén waves on the LAPD**

Project supported by the National Natural Science Foundation of China (Grant No. 11405271), the China Postdoctoral Science Foundation (Grant No. 2017M612901), the Fund from Chongqing Science and Technology Commission (Grant No. cstc2017jcyjAX0047), Chongqing Postdoctoral Special Foundation (Grant No. Xm2017109), the Fundamental Research Funds for Central Universities, China (Grant No. YJ201796), the Pre-research Key Laboratory Fund for Equipment (Grant No. 61422070306), and the Fund from the Laboratory of Advanced Space Propulsion (Grant No. LabASP-2017-10).

Chang Lei^†,

(color online) Variations of the wave magnitudes (rms) with frequency for the odd-parity AGE at z = 23.6975 m and r = 0.0285 m (a), and for the even-parity AGE at z = 25.5125 m and r = 0.0371 m (b). A significant drop of mode strength is clearly seen as the total effective collision frequency is made higher.