Plasma outside the visible

  1. So I friend of mine got into this interesting discussion about different kinds of plasmas in particular the various colors and plasma parameters of various ions (*mainly magnitude of frequency and velocity equation). One interesting question we both had was about the possibility of a plasma whose primary spectrum included stuff outside the visible. Other than possible star examples, where the plasma has an very high temperature, we both could not think of a normal ion or laboratory situation where the plasma might emit in a spectrum outside visible.

    So my question to you all was do you know any examples, laboratory-based or otherwise, of when a plasma's electromagnetic radiation lies outside the visible spectrum?
  2. jcsd
  3. I don't know much about this field myself, but I've heard of work done on ultra-cold plasma.
  4. ZapperZ

    ZapperZ 30,728
    Staff Emeritus
    Science Advisor
    Education Advisor

    Er... look at the Hydrogen spectrum that you could get out of a simple hydrogen gas discharge tube that we use in a typical undergraduate laboratory. There's a reason we ask the students to look at the Balmer series - it is the only series where the transition is in the visible range. The Lyman and Paschen series, for example, are not. But they are certainly there!


Know someone interested in this topic? Share this thead via email, Google+, Twitter, or Facebook

Have something to add?
Similar discussions for: Plasma outside the visible