Dissociative electron attachment to HNO3 and its hydrates: energy-selective electron-induced chemistry

0504200 - ÚFCH JH 2020 RIV GB eng J - Journal Article
Lengyel, Jozef - Fedor, Juraj - Fárník, Michal
Dissociative electron attachment to HNO3 and its hydrates: energy-selective electron-induced chemistry.
Physical Chemistry Chemical Physics. Roč. 21, APR 2019 (2019), s. 8691-8697. ISSN 1463-9076. E-ISSN 1463-9084
R&D Projects: GA ČR(CZ) GA17-04068S; GA ČR GA17-04844S
Institutional support: RVO:61388955
Keywords : Dissociative electron attachment * energy-selective electron-induced chemistry * HNO3
OECD category: Physical chemistry
Impact factor: 3.430, year: 2019
Method of publishing: Limited access

We probe the negative ion production upon the interaction of free electrons with gas-phase HNO3 and its mixed clusters with water. The electron-induced chemistry changes strongly with clustering, exhibiting significant electron energy dependence. For HNO3 hydrates, we identified three involved energy ranges with different behavior: low energies up to about 3.5 eV, an intermediate energy range around 6 eV, and a high energy range, approximately above 9 eV. The major difference is the degree to which the major gas-phase product, NO2−, is converted to NO3−. The latter is the dominant stratospheric anion. Its appearance due to the electron interaction with mixed HNO3/water ice particles thus strongly depends on the electron energy. We discuss the elementary processes and reaction pathways behind the anion conversion.

Permanent Link: http://hdl.handle.net/11104/0295880