  Applications of dielectric barrier discharge (DBD) based atmospheric pressure
plasma jets are often limited by the relatively small area of treatment due to
their 1D configuration. This letter describes the first results demonstrating
generation of 2D plasma bullets and 2D plasma jets permitting fast treatment of
large targets. Imaging of pulsed DBD in He and ionization wave propagation
along the dielectric surface show that DBD evolution starts with formation of
transient anode glow, and only then continues with development of
cathode-directed streamers. The anode glow can propagate as an ionization wave
along the dielectric surface outside of the discharge gap. We show that plasma
bullets propagation is not limited to 1D geometry (tubes), and can be organized
in a form of a planar plasma jet, or other 2D (or even 3D) shapes.
