Cross sections for electron trapping by condensed SF6 and C6H6 under the influence of different polarizable environments

✍ Scribed by F Weik; L Sanche

• Book ID: 104432114
• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 176 KB
• Volume: 205
• Category: Article
• ISSN: 1387-3806
• DOI: 10.1016/s1387-3806(00)00282-7

✦ Synopsis

If Benzene molecules adsorbed onto or embedded within rare gas solid films are bombarded with low-energy electrons below 2 eV, charge localization is detected. The maximal cross section for electron trapping by Benzene adsorbed in submonolayers on a Kr film has a value of 8.1 ϫ 10 Ϫ19 cm 2 in contrast to the isolated molecule where the anion is unstable. On a more polarizable Xe film the cross section maximum is enhanced by a factor of four. Electron attachment to submonolayer SF 6 adsorbed on a Kr film yields a cross section of 2.8 ϫ 10 Ϫ15 cm 2 , which is about one order of magnitude lower than the gas-phase value. On a Xe film this value is enhanced by a factor of 1.6 relative to the Kr substrate. The lower cross SF 6 Ϫ yield in the condensed phase is attributed to a lower capture cross section. (Int J Mass Spectrom 205 (2001) 299 -307) © 2001 Elsevier Science B.V.