I wasn't really sure where to put this but I thought this looked like the right place to be.
I'm working on a personal project, but I'm not sure how to go about it. I'm trying to make a concept for future lightsabers, and I need to find a way to replicate the heat and light emitted from the blade. I know there's (most likely) nothing anywhere close to the heat known to man yet, but are there any known chemical reactions or even unstable chemical ions that have large outputs of light and/or heat?