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An Ion Probe Study of Plasma-Assisted Laser Deposition

Published online by Cambridge University Press:  01 January 1992

S. Witanachchi ,
K. Ahmed ,
P. Sakthivel  and
P. Mukherjee
S. Witanachchi
Affiliation:
Department of Physics, University of South Florida, Tampa, FL 33620
K. Ahmed
Affiliation:
Department of Physics, University of South Florida, Tampa, FL 33620
P. Sakthivel
Affiliation:
Department of Physics, University of South Florida, Tampa, FL 33620
P. Mukherjee
Affiliation:
Department of Physics, University of South Florida, Tampa, FL 33620
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Abstract

The ionic content of an excimer laser ablated Yga2Cu3O7−δ (YBCO) plume has been investigated by using an ion probe detection system. The time-of-flight ion signals indicate a bifurcation of the plume, where the degree of bifurcation is dependent on both the oxygen pressure and the laser spot size at the target. A significant enhancement in the ionic content is observed when the plume is passed through a high voltage discharging ring. The results describing the effect of the pressure, laser spot size and the discharge parameters on the propagating laser plume are presented in this paper.

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References

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