Radiofrequency glow-discharge devices for direct solid analysis

Area of Science:

• Materials Science
• Analytical Chemistry
• Plasma Physics

Background:

• Radiofrequency glow discharges (rf-GD) are recognized for their potential as versatile sources for elemental and isotopic analysis.
• Recent years have seen significant development and characterization efforts focused on rf-GD for direct materials analysis.

Purpose of the Study:

• To review the state-of-the-art of rf-GD coupled with atomic absorption spectrometry, optical emission spectrometry, and mass spectrometry for direct solid analysis.
• To describe the principles of operation and modeling of rf-GD.
• To present instrumentation and practical applications of these techniques.

Main Methods:

• Review of existing literature on rf-GD applications in spectrometry.
• Description of rf-GD principles and plasma modeling approaches.
• Compilation of data from laboratory-developed and commercial rf-GD instrumentation.

Main Results:

• rf-GD coupled with spectrometry enables rapid, direct analysis of diverse materials (conductors, semiconductors, insulators).
• Techniques demonstrate good in-depth resolution for both bulk and depth-profile analysis.
• Various instrumentation setups have been developed and commercialized.

Conclusions:

• rf-GD spectrometric techniques are highly capable for materials science studies and technical development.
• Further research is needed to address existing gaps for full industrial and research implementation.
• Continued development will enhance the utility of rf-GD for advanced materials characterization.