| Autor: |
Yabushita, Akihiro, Kanda, Daichi, Kawanaka, Noboru, Kawasaki, Masahiro |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 10/21/2007, Vol. 127 Issue 15, p154721, 7p, 1 Diagram, 2 Charts, 6 Graphs |
| Abstrakt: |
Time-of-flight (TOF) spectra of photofragment H atoms from the photodissociation of water ice films at 193 nm were measured for amorphous and polycrystalline water ice films with and without dosing of hydrogen chloride at 100–145 K. The TOF spectrum is sensitive to the surface morphology of the water ice film because the origin of the H atom is the photodissociation of dimerlike water molecules attached to the ice film surfaces. Adsorption of HCl on a polycrystalline ice film was found to induce formation of disorder regions on the ice film surface at 100–140 K, while the microstructure of the ice surface stayed of polycrystalline at 145 K with adsorption of HCl. The TOF spectra of photofragment Cl atoms from the 157 nm photodissociation of neutral HCl adsorbed on water ice films at 100–140 K were measured. These results suggest partial dissolution of HCl on the ice film surface at 100–140 K. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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