  The levitation height of a dust particle layer within a RF discharge plasma
sheath is known to be related to the DC bias, the background pressure, and the
Debye length. In this paper, a new experimental technique for measurement of
the Debye length is introduced. This technique is based on the relationship
between an externally applied DC bias and the particle levitation height and
shows that under appropriate conditions, the addition of an externally applied
DC bias provides a mechanism for evaluation of the Debye length. When compared
with existing techniques, this new method appears to be simpler to implement in
some cases.
