Background: My SciFi books are set 50-100 years into the future. My combat ships use fusion for power and direct thrust. (See previous question: "Performance envelope characteristics for a hard-sci-fi torch-ship") As many helpful people pointed out, one of the main issues with high power will be heat.
My ships are able to control, with a high degree of precision, plasma envelopes surrounding them. This is used in-atmosphere for magnetohydrodynamic propulsion. In space, the plasma-envelope is used for stealth by absorbing/reflecting radiation from radar etc.
If the ships have flakes of metal suspended in the plasma (something like: dusty plasmas) the flakes will absorb heat from the plasma and radiate it. If the flakes are mirrored on one face and black on the other and if the ship can control the orientation of the flake, is this a valid mechanism for preferentially radiating heat in a desired direction?
Many thanks in advance! I am happy to share more info!