Abstract
A model of the liquid-metal ion-source shape consisting of a jet-like protrusion on the end of a Taylor cone shape is shown to be consistent with a field evaporation mechanism of ion formation, fluid dynamic considerations, space charge effects and recent TEM observations. The diameter of the ion emitting area is found to be only a few tens of Å. Self-consistent numerical calculations of electric potential and particle trajectories predict emission characteristics which compare favorably with experimental results.
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References
R. Gomer: Appl. Phys.19, 365 (1979)
P.D. Prewett, G.L.R. Mair, S.P. Thompson: J. Phys. D15, 1339 (1982)
N.K. Kang, L.W. Swanson: Appl. Phys. A30, 95 (1983)
R.G. Forbes, G.L.R. Mair: J. Phys. D15, L153 (1982)
H. Gaubi, P. Sudraud, M. Tence, J. van de Walle: Proc. 29th Intern. Field Emission Symposium ed. by H.-O. Andren and H. Norden (Almqvist and Wiksell, Stockholm 1982) p. 357
P. Sudraud: Private communication
G.I. Taylor: Proc. R. Soc. (London) A280, 383 (1964)
N. Sujatha, P.H. Cutler, E. Kazes, N.M. Miskovsky: Proc. 30th Intern. Field Emission Symp. (Univ. of Pennsylvania, Philadelphia 1983) p. 58
D.R. Kingham: Appl. Phys. A31, 161 (1983)
N.K. Kang, J. Orloff, L.W. Swanson, D. Tuggle: J. Vac. Sci. Technol.19, 1077 (1981)
A. Wagner, T.M. Hall: J. Vac. Sci. Technol.16, 1871 (1979)
D.L. Barr: J. Appl. Phys.55 (1984, in press)
L.W. Swanson, G.A. Schwind, A.E. Bell, J.E. Brady: J. Vac. Sci. Technol.16, 1864 (1979)
A.E. Bell, G.A. Schwind, L.W. Swanson: J. Appl. Phys.53, 4602 (1982)
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On leave from Trinity Hall, Cambridge, UK