This article from NIST describes a comprehensive atlas of spectral data for thorium-argon hollow cathode lamps. The atlas includes tables with detailed information about the lamp’s emission lines, including:
1. Ritz wavenumbers and wavelengths calculated from optimized energy levels
2. Measured wavenumbers and wavelengths from various references
3. Relative intensities of the emission lines
4. Species information and level designations for the lines
The data is organized into columns with specific descriptions, such as Ritz wavenumbers, uncertainties, measured values, and references. The article emphasizes the importance of considering the lamp’s operating conditions when using the intensity data for comparison purposes.
The atlas provides a valuable resource for researchers and scientists working with thorium-argon hollow cathode lamps, as it compiles essential spectral information in a structured format.
Keywords: Wavenumber, Uncertainty, Species, Intensity
