Experimental studies of the large Debye length probe theory in a continuum plasma

Abstract
The Laplace limit probe theory for continuum plasmas, i.e., probe theory under the condition rpD→0, where rp is probe radius and λD is Debye length, has been experimentally studied. The results show that the application limit of this theory is rpD=0.44 for a spherical probe and rpD=0.23 for a cylindrical probe.