Figure 3

Figure 3: (Left) Emission of electrons from an expanding xenon plasma. The black curve is the usual signal in zero field due to evaporation of electrons during expansion. The three red curves show periodic bursts of electrons for three different realizations of the plasma, due to a plasma instability arising from crossed E and B fields of 10 mV/cm and 2 G. (Right) Image of the electron distribution under conditions of periodic electron emission showing breakup of the plasma.