Vapor shielding and erosion of surfaces exposed to a high heat loadin an electrothermal accelerator |
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| Authors: | Bourham MA Hankins OE Auciello O Stock JM Wehring BW Mohanti RB Gilligan JG |
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| Institution: | Dept. of Nucl. Eng., North Carolina State Univ., Raleigh, NC; |
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| Abstract: | The experimental and theoretical verification of the vapour shield concept in an electrothermal accelerator is reported. Measurements of the ablation mass loss of the insulator material (Lexan) demonstrate that the energy transmission factor through the vapor shield is of the order of 10%. If enough vapor is produced under high heat flux, the vapor shield mechanism will help limit the surface erosion in electromechanical devices. The erosion of the barrel material (aluminum) has a strong axial dependence, and the erosion depth increases with input energy |
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