Name that reaction?

No.10876595 ViewReplyOriginalReport
I know this isn't /wsr/ but i am desperate, a while ago I had seen a webm here on /sci/ that i can best describe as some type of reaction within a cylindrical capsule about a foot long.
The reaction started off as a mass of dark material that rapidly erupted within the container with burst of deep red and vibrant orange lashing exploding out from the dark material, eventually reaching what appeared to be a critical mass as the whole damn machine shook and looked as if it was about to break out, until the machine was powered down and the reaction subsided.

The shit looked like some kind of malignant dark energy from science fiction, and it's been gnawing at me that i've no idea what is. Anyone have any guesses as to what it would be, or the webm itself of it? I'm going crazy trying to figure it out.
>Looked like pic related