Springer (part of Springer Nature), Brazilian Journal of Physics, 3b(34), p. 1224-1240
DOI: 10.1590/s0103-97332004000600015
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We present a detailed derivation of the effective dielectric constant to be used in the dispersion relation for electrostatic waves in the case of a plasma immersed in a inhomogeneous magnetic field, with inhomogeneity perpendicular to the direction of the magnetic field.