Magnetic Nozzle Experiment at PPPL

Magnetic Nozzle Experiment (MNX) at PPPL: Magnetized argon plasma, formed by absorption of helicon waves, emerging (from the right) through a 0.6-cm diameter aperture in a metal plate. The red glow surrounding the aperture is halo from a Si-diode laser beam used for laser-induced-fluorescence measurement of argon velocity. (Photo by S. Cohen)