22-EPN3-059: Electron Impact Induced Emission of Formamide – Excitation Processes Study
Visit by Frantisek Krcma, Brno University of Technology (Czechia), to TA2 Facility 13 – Electron Induced Fluorescence Laboratory (Slovakia).
Dates of visit: 06-15 November 2023
Report summary: The main goals of the 2023 visit were to study the electron impact emission cross sections, spectral features, and dissociation thresholds of formamide (CH3NO) vapour. The expected products of CH3NO – atomic hydrogen, CO, CN, CH, NH. The present experiments are part of a campaign to understand diagnostic electron-impact driven emission and ionisation of molecules present in astrophysical environments.
During the visit we first determined the experimental conditions especially the suitable range of molecular beam pressures low enough to ensure binary collisions with electrons but high enough to ensure reasonable signal-to-noise ratio. Then we performed spectral measurements at various wavelength regions and identified the basic spectral features. It was unusually difficult to determine
suitable experimental conditions due to unstable formamide vapour pressure in the system. During the visit we had to slightly modify the gas inlet system of the apparatus. Therefore, further experimental measurements will be performed later in cooperation with the Comenius University group.
