Posted: Sun Apr 04, 2010 5:41 am
Sorry, I seem to keep asking stupid lay person questions.
And Coulomb says, if electrons are in the cusp exhaust, then ions are there, too.
Is that still true if the electrons in the core outnumber the ions by a sufficient amount? From my really limited understanding I don't see why the negative charge in the cusps MUST be greater than that from the center. Doesn't the core just need enough excess electrons to hold more charge than the cusps to prevent ions getting pulled out with the electrons?