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Emittance Measurements for N+ and N2+ in an Ion Beam from a Cyclotron Ion Source

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2 Author(s)
Toman, M. ; University of Maryland Department of Electrical Engineering College Park, Maryland, 20742 ; Reiser, M.

The radial density profiles and emittance have been measured for N+ and N2+ beams from a Penning-type ion source that has a hot filament. It was found that the emittance for an extraction voltage of 12 kV and for 50% of the beanw as 21 cm-mrad for N+ and about 12 cm-mrad for N2+ The difference between these two areas may, in part, be explained by a charge state dependence due to different velocities of the two ion beams.

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Nuclear Science, IEEE Transactions on  (Volume:19 ,  Issue: 2 )