Hello All, In this recent Navy publication, a team of researchers said they have discovered cusp confinement. This could be a major step towards fusion power. I am working on a write up of this publication. I am trying to understand their inferometry data. As far as I can tell, the plasma was made of (in order by strength): 1. Electrons (likely the greatest component) 2. Hydrogen ions/neutrals 3. Carbon 4. A noble gas of some kind 5. Air/junk (negligible amount) These things were probably (+), (-) and neutrals. Does anyone have the spectrum for a pure electron plasma?