Development and characteristics study of compact Penning ion source.

Area of Science:

• Physics
• Plasma Physics
• Ion Source Technology

Background:

• Development of compact ion sources is crucial for various scientific and industrial applications.
• Optimizing plasma generation and ion extraction is key to improving ion source performance.
• Existing ion sources often face limitations in terms of size, power consumption, or beam characteristics.

Purpose of the Study:

• To design and develop a compact-size Penning ion source with a small discharge volume.
• To investigate the plasma dynamics and operational characteristics in both continuous and pulse modes.
• To achieve efficient ion extraction and measure beam currents for potential applications.

Main Methods:

• Geometrical optimization of the ion source to achieve a homogeneous magnetic field.
• Study of pulse mode discharge dynamics with varying anode voltage parameters.
• Design of an axial extraction system for efficient ion beam extraction.
• Measurement of beam currents in both continuous and pulsed discharge modes.

Main Results:

• A compact Penning ion source with a 1.24 cm³ discharge volume was successfully developed.
• Dense plasma generation was achieved at low discharge power due to geometrical optimization.
• High discharge current pulses (hundreds of amperes) with low delay and fast rise times were recorded.
• The ion source demonstrated efficient operation in both continuous and pulse modes for various gases.
• Measured beam currents were 200 µA in continuous mode and 6 A in pulsed mode.
• Variable beam current extraction was achieved by adjusting the extraction voltage.

Conclusions:

• The developed compact Penning ion source is highly efficient, capable of generating dense plasma at low power.
• The source exhibits versatile operation in both continuous and pulse modes, suitable for diverse gas types.
• The efficient extraction system allows for variable beam current output, making the source adaptable for various potential applications.