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Laser ablation system for the injection of neutral materials into an electron beam ion trap

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6 Author(s)
Niles, A.M. ; Lawrence Livermore National Laboratory, University of California, Livermore, California 94550 ; Magee, E.W. ; Thorn, D.B. ; Brown, G.V.
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We have designed and implemented a laser ablation system to inject neutral material into the EBIT-I and SuperEBIT high-energy electron beam ion trap at the Lawrence Livermore National Laboratory. A laser-generated vapor created from a solid material target was scrubbed of ions prior to injection into the trap in the form of a collimated beam. We used a Q-switched Nd:YAG laser with a pulse duration of 15.7 ns full width at half maximum and intensities at the target controllable from 0.035 to 0.46 GW/cm2. Compared with other injection methods, this pulsed system adds new flexibility including the ability to vary fill trap in both time and quantity and without changing trap or beam parameters. Moreover, it allows us to inject materials that are not readily injected by the standard metal vapor vacuum arc (MeVVA) method. Performance comparisons between the laser ablation system and MeVVA method are presented.

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Review of Scientific Instruments  (Volume:77 ,  Issue: 10 )