| Автор | J M Coquel |
| Автор | T Almeida Gasche |
| Автор | J Wilkes |
| Автор | C M Friedrich |
| Автор | C L A Lamont |
| Автор | M A MacDonald |
| Автор | R E Palmer |
| Автор | A M C Moutinho |
| Дата выпуска | 1996-03-04 |
| dc.description | We have investigated photon stimulated ion desorption from physisorbed on highly oriented pyrolytic graphite using VUV synchrotron radiation in the energy range 13 - 40 eV. In contrast with gas phase photodissociation measurements, only ions are detected. This result is attributed to the image potential barrier to desorption from the surface and the unequal distribution of kinetic energy amongst the molecular photofragments. The yield of desorbed ions shows a threshold at 20.5 eV and a resonance at 24 eV and appears to be enhanced in the monolayer regime. This behaviour differs significantly from that of the gas phase, and is attributed to selective quenching of excited molecular electronic states on the surface and to chemical reactions between specific molecular dissociated fragments and the substrate. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Photon stimulated ion desorption from polyatomic molecules in the VUV: - graphite |
| Тип | lett |
| DOI | 10.1088/0953-8984/8/10/004 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 8 |
| Первая страница | L153 |
| Последняя страница | L158 |
| Выпуск | 10 |
