How 99.999% xenon gas enables efficient ion propulsion for satellites & deep-space missions. Learn purity standards, challenges & sourcing tips for aerospace engineers.

1.The Science of Ion Propulsion

How Xe⁺ ions accelerate to 90,000 mph using electric fields.

Why xenon?   High mass → high thrust-to-power ratio.

2.Purity Requirements for Mission Success

99.995% Xe to prevent thruster erosion.

Trace Kr/N₂ cause unstable plasma discharges.

3.Case Studies

NASA’s Dawn mission: 10+ years on Xe thrusters.

SpaceX Starlink satellites (krypton vs. xenon tradeoffs).

4.Logistical Challenges

Global scarcity → 2023 price: ~$2,500/kg.

Handling: DOT-approved cylinders for transport.

5.Future Outlook

In-situ resource utilization (mining xenon from Mars?).