Open AccessAmmonia ices under low-energy electron irradiation - Towards quantitative desorption rates and effective cross sections
Author(s) -
Leo Sala,
L. Amiaud,
Céline Dablemont,
A. Lafosse
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1412/20/202003
Subject(s) - desorption , thermal desorption spectroscopy , fragmentation (computing) , chemistry , electron , electron energy loss spectroscopy , electron beam processing , irradiation , analytical chemistry (journal) , spectroscopy , chemical physics , adsorption , physics , nuclear physics , quantum mechanics , computer science , operating system , chromatography
Synopsis Low-energy (< 20 eV) electron processing of NH 3 multilayer films, systems of interest in astrochemistry, leads to significant NH 3 desorption, fragmentation, and to a complex chemistry arising from recombination and secondary processes induced by reactive products. Quantitative desorption rates of neutral species and effective cross sections for selected processes were obtained by combining three surface-sensitive techniques: High Resolution Electron-Energy Loss Spectroscopy (HREELS), Temperature Programmed Desorption (TPD) and Electron Stimulated Desorption (ESD) of neutral species.