Translational and rotational energy content of benzene molecules IR-desorbed from an in vacuo liquid surface
Benzene molecules were desorbed from an in vacuo aqueous liquid beam by direct irradiation of the beam with an IR laser tuned to the 2.85 mm absorption band of water. Spectroscopic interrogation of the desorbed benzene molecules was performed via 1 + 1 Resonance-Enhanced Multi-photon Ionisation (REM...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Royal Society of Chemistry
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/20949 |
| _version_ | 1848750453298298880 |
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| author | Maselli, O. Gascooke, J. Shoji, M. Buntine, Mark |
| author_facet | Maselli, O. Gascooke, J. Shoji, M. Buntine, Mark |
| author_sort | Maselli, O. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Benzene molecules were desorbed from an in vacuo aqueous liquid beam by direct irradiation of the beam with an IR laser tuned to the 2.85 mm absorption band of water. Spectroscopic interrogation of the desorbed benzene molecules was performed via 1 + 1 Resonance-Enhanced Multi-photon Ionisation (REMPI). Rotational contour analyses of the 6 1/0 vibronic transition of benzene were performed to determine the rotational temperature of those molecules ejected during the desorption event. At the peak of the desorption plume density, the rotational temperatures were found to be up to ~100 K lower than that recorded for molecules spontaneously evaporating from the liquid surface. At longer IR-UV laser delay times the benzene rotational temperatures are found to return to those observed following spontaneous evaporation. No evidence of IR desorbed neutral or cationic benzene-containing clusters was observed. However, ionic clusters were observed to be formed after REMPI of the benzene monomer. Analysis of the benzene intensity and that of post-REMPI formed clusters as a function of IR-UV delay shows that number density and local translational temperature vary along the desorption plume. |
| first_indexed | 2025-11-14T07:37:04Z |
| format | Journal Article |
| id | curtin-20.500.11937-20949 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:37:04Z |
| publishDate | 2012 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-209492017-09-13T16:05:29Z Translational and rotational energy content of benzene molecules IR-desorbed from an in vacuo liquid surface Maselli, O. Gascooke, J. Shoji, M. Buntine, Mark in vacuo liquid surface IR-desorbed benzene molecules Benzene molecules were desorbed from an in vacuo aqueous liquid beam by direct irradiation of the beam with an IR laser tuned to the 2.85 mm absorption band of water. Spectroscopic interrogation of the desorbed benzene molecules was performed via 1 + 1 Resonance-Enhanced Multi-photon Ionisation (REMPI). Rotational contour analyses of the 6 1/0 vibronic transition of benzene were performed to determine the rotational temperature of those molecules ejected during the desorption event. At the peak of the desorption plume density, the rotational temperatures were found to be up to ~100 K lower than that recorded for molecules spontaneously evaporating from the liquid surface. At longer IR-UV laser delay times the benzene rotational temperatures are found to return to those observed following spontaneous evaporation. No evidence of IR desorbed neutral or cationic benzene-containing clusters was observed. However, ionic clusters were observed to be formed after REMPI of the benzene monomer. Analysis of the benzene intensity and that of post-REMPI formed clusters as a function of IR-UV delay shows that number density and local translational temperature vary along the desorption plume. 2012 Journal Article http://hdl.handle.net/20.500.11937/20949 10.1039/C2CP40180K Royal Society of Chemistry restricted |
| spellingShingle | in vacuo liquid surface IR-desorbed benzene molecules Maselli, O. Gascooke, J. Shoji, M. Buntine, Mark Translational and rotational energy content of benzene molecules IR-desorbed from an in vacuo liquid surface |
| title | Translational and rotational energy content of benzene molecules IR-desorbed from an in vacuo liquid surface |
| title_full | Translational and rotational energy content of benzene molecules IR-desorbed from an in vacuo liquid surface |
| title_fullStr | Translational and rotational energy content of benzene molecules IR-desorbed from an in vacuo liquid surface |
| title_full_unstemmed | Translational and rotational energy content of benzene molecules IR-desorbed from an in vacuo liquid surface |
| title_short | Translational and rotational energy content of benzene molecules IR-desorbed from an in vacuo liquid surface |
| title_sort | translational and rotational energy content of benzene molecules ir-desorbed from an in vacuo liquid surface |
| topic | in vacuo liquid surface IR-desorbed benzene molecules |
| url | http://hdl.handle.net/20.500.11937/20949 |