Excitation of the Gas-Phase Guanine Molecules by Electron Impact

Key Points

• This research aims to explore the excitation processes of isolated guanine molecules when subjected to electron impact.
• Isolated guanine molecules were excited by a beam of slow electrons at 100 eV energy.
• Emissions were measured in the 250–500 nm wavelength range.
• The resulting emission spectra were analyzed for spectral bands and lines.
• Nineteen spectral bands and lines were observed in the emission spectra.
• Emission spectra resulted from dissociative excitation and ionization processes.
• The findings suggest new insights into the underlying electronic levels of guanine.