Characterization of a Pt-Ne hollow cathode spectral line source

Area of Science:

• Radiometry
• Spectroscopy
• Space instrumentation

Background:

• Developing reliable radiometric standards for space applications is crucial for accurate measurements.
• Existing wavelength standards have limitations for broader radiometric applications.

Purpose of the Study:

• Investigate a sealed hollow cathode lamp as a secondary radiometric standard for space.
• Evaluate the lamp's performance across critical parameters for space deployment.

Main Methods:

• Characterized lamp properties including warmup time, stability, and emission.
• Assessed repeatability, spatial uniformity, and angular dependence.
• Analyzed spectral impurities and long-term behavior.

Main Results:

• The platinum hollow cathode lamp with neon exhibits a uniform spectral line distribution.
• Key performance metrics such as stability and repeatability were quantified.
• The source's suitability for space-based radiometric measurements was assessed.

Conclusions:

• The investigated hollow cathode lamp shows promise as a secondary radiometric standard for space.
• Further validation is recommended for long-term space missions.
• Uniform spectral output across the UV-Vis range is a key advantage.