Electron-impact vibrational excitation of isocyanic acid HNCO

0537037 - ÚFCH JH 2021 RIV US eng J - Článek v odborném periodiku
Kumar, Ragesh Thelakkadan Puthiyaveettil - Nag, Pamir - Ranković, Miloš - Čurík, Roman - Knížek, Antonín - Civiš, Svatopluk - Ferus, Martin - Trnka, J.
Electron-impact vibrational excitation of isocyanic acid HNCO.
Physical Review A. Roč. 102, DEC 2020 (2020), č. článku 062822. ISSN 2469-9926. E-ISSN 2469-9934
Grant CEP: GA ČR(CZ) GA20-11460S; GA ČR GA19-03314S; GA ČR(CZ) GA18-02098S; GA MŠMT EF16_019/0000778
Institucionální podpora: RVO:61388955
Klíčová slova: HNCO * prebiotic chemistry * electron scattering experiments
Obor OECD: Physical chemistry
Impakt faktor: 3.140, rok: 2020
Způsob publikování: Omezený přístup

In a combined experimental and theoretical study, we probe the vibrational excitation of isocyanic acid induced by electron impact in the energy range up to 5 eV. Experimentally, we report differential elastic and vibrationally inelastic cross sections at the scattering angle of 135∘. Theoretically, we characterize the involved resonant states using a regularized analytical continuation method. We also apply a nonlocal resonance model to calculate cross sections for vibrational mode that involves the N-H stretching motion. The model reproduces all the features observed in the experiment: efficient excitation at threshold, sharp cusps in the excitation functions, and the formation of an A′ shape resonance. There is a second (A'') resonance visible in the spectra. However, it excites only selected vibrational modes. The origins of this selectivity are discussed.
Trvalý link: http://hdl.handle.net/11104/0314791