科研之友
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摘要
Dust lattice waves of a one-dimensional plasma crystal chain with an external magnetic field are investigated. When the magnetic field is in the vertical direction (theta = 0), perpendicular to the chain, the vertical transverse mode is not affected, while the horizontal transverse mode is coupled with the longitudinal mode. In the high frequency range, we obtain an 'upper-hybrid' dust lattice mode and in the low frequency range, we obtain a 'lower-hybrid' dust lattice mode. Between the two modes, a 'gap' is formed. When the magnetic field is oriented to the chain (theta = pi/2), the longitudinal mode is not affected while both the horizontal and vertical transverse modes are shifted due to the effect of the magnetic field.
