Positive Ion Duoplasmatron Source

Applications

NEC designed the positive ion duoplasmatron source primarily to produce H⁺, He⁺, O⁺, and Ar⁺ beams. However, it is usable for most gases that form stable positive ions.

We supplied the source with NEC’s open air systems up to 200 kV and Pelletron accelerators up to 20 MV.

 

Positive Ion Duoplasmatron Source Design

This NEC ion duoplasmatron source is of all metal and ceramic construction and utilizes metal gaskets to provide vacuum seals.

 

The source is provided with:

• An anode aperture bypass valve.
• A liquid cooling connection.
• A source magnet with electrical feedthroughs.
• Clamps to hold a variety of filament and cathode types.

 

Options

There are several different versions of this ion duoplasmatron source, which differ by internal geometry and anode aperture diameter. Aperture diameters range from 0.05 mm to 0.5 mm.

The anode aperture is drilled in an anode aperture insert and anode inserts may be exchanged to change operating parameters.

 

Positive Ion Duoplasmatron Source Performance

Beams of He⁺, O⁺ and Ar⁺ are routinely produced with currents on the order of 2 to 2.5 mA when arc and extractor voltages of about 100 V and 30 kV DC respectively are used. Beams of H⁺ up to 10 mA pulsed or expect 1 mA DC.

Please contact NEC with any questions about potential applications or performance.

Related Documents

Pos Duop v1