| 摘要 |
An open ion source embodied in a vessel having an accelerating voltage applied to at least one outlet. The source includes a supply of gas molecules. The source also includes at least one magnet for generating a magnetic field, at least one outlet of the vessel, wherein the opening is sufficiently wide for the ions to exit the vessel and an electron source at the same at least one outlet, wherein the electrons collide with the gas molecules to produce the ions, and the electrons form a space charge to focus the ions into a beam in order to facilitate their exiting through the at least one outlet. The electrons are launched, the ions leave and the magnetic lines begin at the point of the same at least one outlet, and the electrons stay on the magnetic lines from which they are launched. |
