When doing some reading on particle physics, I came across the concept of a "multicharge nuclei". A Google search of this phrase returns a number of research papers, but no definition for what a "multicharge nuclei" is.
How does it make sense to say that a nuclei can have multiple charges (that is, a "multicharge nuclei")? I recently read about the concepts of baryonic charge and color charge. In the context of color charge, if I understood the theory correctly, the particles in the nucleus must have a color charge of $0$, right? So is it referring to "baryonic charge"?
I would greatly appreciate it if people would please take the time to explain this for a novice.