The direct extraction negative ion duoplasmatron ion source is a displaced intermediate electrode duoplasmatron for use in a wide variety of accelerator systems. It produces modest currents of negative ions from many molecular gases, including H–, O–, NH2–, CN–, and C–. Contact us to learn more
The negative ion duoplasmatron produces modest currents of negative ions from many molecular gases, including H–, O–, NH2–, CN–, and C–. It also will produce other ions from diatomic or molecular gases that, upon contact with a duoplasmatron arc, have a good probability of breaking up into positive and negative ions.
It will not produce currents of N– from N2 gas because of the instability of the N– ion. It also cannot produce negative ions from the atomic gases such as helium, argon, etc.
Two versions of the negative Duoplasmatron source are available: simple and liquid cooled.
Liquid Cooled Negative Ion Duoplasmatron
Typical H– output for the simple negative Duoplasmatron is 5-10 µA within the proper emittance of 3 πmm mR (MeV)1/2 for efficient transmission through an accelerator system.
The liquid cooled version can produce currents of up to 30 µA H– with a standard aperture and filament.