What question did this study set out to answer?

This research aims to examine how the second overtone band of carbon monoxide is affected by pressure broadening from neon and nitrogen.

Pressure broadening of the 3–0 overtone band of CO by neon and nitrogen

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Line shape analysis reveals the effects of neon and nitrogen on CO overtone bands.

This research aims to examine how the second overtone band of carbon monoxide is affected by pressure broadening from neon and nitrogen.
Diode laser absorption spectroscopy was utilized to measure line shapes at room temperature.
Measurements were conducted across the P branch from P(1) to P(24).
Quadratic speed-dependent Voigt parameters were calculated and compared with theoretical models.
The measured line shapes for nitrogen broadening match well with earlier reports.
Neon-broadened lines showed agreement with Dicke-narrowed line shapes to within 1%.
Some systematic disagreements were noted between the theoretical and measured line shapes.

Schaertel et al. (2026) studied this question.

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