This may seem like a strange question, I'm trying to differentiate between the spectra from a plasma and the spectra from a black body, is there a difference? I'm thinking the spectrum from a plasma would be that of bremstrahhlung as it is ions flying everywhere, so it would not be possible for it to have the spectrum of a black body. but wouldn't a plasma that was enclosed in an area be a black body? if someone could help me differentiate it would be really appreciated, thanks in advance edit in particular this statement: This emission mechanism turns out to be same as the black body radiation with finite absorption, which confirms that the principal mechanism of SBSL is bremsstrahlung with slight black body emission nature. which makes very little sense to me, how can something be bremsstrahlung AND black body?