Abstract
A molecular beam spectrometer using dielectrophoresis is described which should be useful in studies of molecular polarizabilities, dipole moments, rotational energy states, and reaction rates. The special electrode system produces a constant force over a wide spatial region (hence is “isomotive”) on nonpolar and simple polar molecules. Design optima and calculations of the obtainable forces, beam intensities, and resolutions are given for some typical molecules (methane, naphthalene, hydrogen chloride) for the proposed instrument. The isomotive field geometry affords a gain in beam strength over other designs, permitting the use of velocity-selected beams in a spectrometer having a circular beam path. It is capable of separating molecules on the basis of either mass or polarizability.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Becker, R.: Sauter, F., 1964.Electromagnetic Fields and Interactions, New York: Blaisdell Publishing Co., 111.
Brodie, I. 1964.J. Appl. Phys. 35, 2324.
Brodie, I. Personal correspondence with authors.
Crane, J. S. 1966.Molecular Beam Spectrometer Using Dielectrophoresis. M. S. Thesis, Oklahoma State University.
Fraser, R. 1936.Molecular Rays. Cambridge: Cambridge University Press.
Fricke, G. 1955.Z. Physik. 141. 166.
Goodrich, G. W.; Wiley, W. C. 1961.Rev. Sci. Instr. 32, 846.
Hauser, W. 1965.Introduction to the Principles of Mechanics. Reading, Mass.: Addison-Wesley.
Herzberg, G. 1950.Spectra of Diatomic Molecules. New York: D. Van Nostrand, 2nd ed., 307.
Hughes, H. K. 1947.Phys. Rev. 72, 718.
Pickard, W. F. 1965.Progress in Dielectrics, VI. J. G. Birks and J. Hart, eds., New York: Academic Press, 23.
Pohl, H. A. 1951.J. Appl. Phys. 22, 869.
Pohl, H. A. 1958.J. Appl. Phys. 29, 1182.
Pohl, H. A.; Schwar, J. P. 1959.J. Appl. Phys. 30, 69.
Pohl, H. A. 1961.J. Appl. Phys. 32, 1784.
Pohl, H. A. 1960.J. Electrochem. Soc. 107, 386.
Pohl, H. A. 1960.Sci. Am. 203, 107.
Pohl, H. A.; Plymale, C. E. 1960.J. Electrochem. Soc. 107, 390.
Pohl, H. A.; Schwar, J. P. 1960.J. Electrochem. Soc. 107, 383.
Pohl, H. A.; Hawk, I. 1966.Science 152, 647.
Pohl, H. A. 1978.Dielectrophoresis, The Behavior of Matter in Nonuniform Electric Fields. London: Cambridge University Press.
Pohl, H. A.; Crane, J. S. 1971.Biophys. J. 11, 711.
Ramo, S.; Whinnery, J. R. 1953.Fields and Waves in Radio. New York: John Wiley and Sons, 2nd ed., 133.
Ramsey, N. F. 1956.Molecular Beams. Oxford: Clarendon Press.
Reynolds, J. H. 1956.Rev. Sci. Instr. 27, 928.
Scheffers, H. 1939.Physik. Z. 40, 1.
Tasman, H.; Boerboom, A. Kistenmaker, J. 1963.Mass Spectrometry. New York: McGraw-Hill, ed. C. McDowell.
Trischka, J. W. 1948.Phys. Rev. 74, 718.
Wessel, G. 1953.Phys. Rev. 92, 641.
Wrede, E. 1927.Z. Physik. 44, 261.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Pohl, H.A., Crane, J.S. A mass polarizability molecular beam spectrometer. J Biol Phys 11, 103–110 (1983). https://doi.org/10.1007/BF01881328
Issue Date:
DOI: https://doi.org/10.1007/BF01881328