1. This work was reported in part in B. Sturtevant, “Effusion of charged particles from a shock heated gas,” GALCIT Rept. California Institute of Technology, Pasadena, California, 1960 (unpublished).
2. A Radio-Frequency Probe for the Mass-Spectrometric Analysis of Ion Concentrations
3. Ambipolare Effusion aus der positiven Säule
4. Experimentelle Untersuchungen über die ambipolare Effusion aus der positiven Säule
5. This work is reviewed with references in R. H. Fowler,Statistical Mechanics(The University Press, Cambridge, England, 1955), Chap. 11; cf. also F. H. Clauser, “Plasma dynamics,” Johns Hopkins University, Department of Aeronautics, AFOSR TR-59-125 (1959).