| Autor: |
Bystritskii, Vit., Garate, E., Rostoker, N., Song, Y., VanDrie, A., Anderson, M., Qerushi, A., Dettrick, S., Binderbauer, M., Walters, J.K., Matvienko, V., Petrov, A., Shlapakovsky, A., Polkovnikova, N., Isakov, I. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 7/15/2004, Vol. 96 Issue 2, p1249-1256, 8p, 2 Diagrams, 9 Graphs |
| Abstrakt: |
The paper describes experiments on the generation and transport of a low energy (70-120 keV), high intensity (10-30 A/cm²) microsecond duration H+ ion beam (IB) in vacuum and plasma. The IB was generated in a magnetically insulated diode (MID) with an applied radial B field and an active hydrogen-puff ion source. The annular IB, with an initial density of ji ∼ 10-20 A/cm² at the anode surface, was ballistically focused to a current density in the focal plane of 50-80 A/cm². The postcathode collimation and transport of the converging IB were provided by the combination of a "concave" thyroidal magnetic lens followed by a straight transport solenoid section. With optimized MID parameters and magnetic fields in the lens/solenoid system, the overall efficiency of IB transport at the exit of the solenoid 1 m from the anode was ∼ 50% with an IB current density of 20 A/cm². Two-dimensional computer simulations of post-MID IB transport supported the optimization of system parameters. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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