Laser propulsion activity in South Africa

Abstract

Three sets of laser propulsion experiments have been conducted in South Africa. The first, on the MLIS kilowatt CO2 laser at Pelindaba, gave a surprisingly good result but could not be repeated after the laser chain was dismantled when South Africa's uranium isotope programme was closed. The second, conducted with a kilowatt CO2 laser module, produced unexpectedly weak propulsion. We give reasons for the discrepancy between the two experiments. In the third experiment, hybrid solar and laser propulsion was tested: laser momentum coupling was enhanced as a result of generation of a dusty plasma by the concentrated solar energy.