Conclusions

In this present paper the use of conducting polymers in VdG dust accelerators has been improved to show how such particles can extend the range of materials used in impact ionization studies. The samples used were: Pure PPY, achieving a maximum velocity of 37 km s"1, excellent for such work. A bromine doped latex, showing how the density of the particles can be controlled and how specific elements can be added to them for delivery to the target in experiments. And finally a new PPY-silica nano-composite mixed particle. This last type of particle is of particular interest as it shows than one can readily make mineral grains available in impacts. These dusts are now all being used at the University of Kent for impact ionization experiments, including time of flight (mass) spectrometry investigations.

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