Rotational energy distributions of benzene liberated from aqueous liquid microjets: A comparison between evaporation and infrared desorption
We have measured the rotational energy distribution of benzene molecules both evaporated and desorbed by an IR laser from a liquid microjet. Analysis of the 6(0)(1) vibronic band of benzene has shown that the benzene molecules evaporating from the liquid microjet surface have a rotational temperatur...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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CSIRO Publishing
2006
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| Online Access: | http://hdl.handle.net/20.500.11937/31079 |
| _version_ | 1848753274990100480 |
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| author | Maselli, O. Gascooke, J. Kobelt, S. Metha, G. Buntine, Mark |
| author_facet | Maselli, O. Gascooke, J. Kobelt, S. Metha, G. Buntine, Mark |
| author_sort | Maselli, O. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We have measured the rotational energy distribution of benzene molecules both evaporated and desorbed by an IR laser from a liquid microjet. Analysis of the 6(0)(1) vibronic band of benzene has shown that the benzene molecules evaporating from the liquid microjet surface have a rotational temperature of 157 +/- 7 K. In contrast, the rotational temperature of benzene molecules desorbed from the liquid microjet by a 1.9 mu m laser pulse is 82 +/- 5 K. However, in both cases careful inspection of the spectral profiles shows that the experimental rotational distributions are non-Boltzmann, displaying an underpopulation of high rotational states and a relative overpopulation of the low rotational states. The non-equilibrium evaporation and desorption spectral profiles are consistent with a model that involves transfer of internal energy into translation upon liberation from the condensed phase. |
| first_indexed | 2025-11-14T08:21:55Z |
| format | Journal Article |
| id | curtin-20.500.11937-31079 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:21:55Z |
| publishDate | 2006 |
| publisher | CSIRO Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-310792017-09-13T15:10:43Z Rotational energy distributions of benzene liberated from aqueous liquid microjets: A comparison between evaporation and infrared desorption Maselli, O. Gascooke, J. Kobelt, S. Metha, G. Buntine, Mark SOLVENT WATER MOLECULAR-BEAM IONIZATION NEUTRAL CLUSTERS LASER-DESORPTION IRRADIATION IR LASER IONIZATION/DESORPTION MASS-SPECTROMETRY COMPLEXES We have measured the rotational energy distribution of benzene molecules both evaporated and desorbed by an IR laser from a liquid microjet. Analysis of the 6(0)(1) vibronic band of benzene has shown that the benzene molecules evaporating from the liquid microjet surface have a rotational temperature of 157 +/- 7 K. In contrast, the rotational temperature of benzene molecules desorbed from the liquid microjet by a 1.9 mu m laser pulse is 82 +/- 5 K. However, in both cases careful inspection of the spectral profiles shows that the experimental rotational distributions are non-Boltzmann, displaying an underpopulation of high rotational states and a relative overpopulation of the low rotational states. The non-equilibrium evaporation and desorption spectral profiles are consistent with a model that involves transfer of internal energy into translation upon liberation from the condensed phase. 2006 Journal Article http://hdl.handle.net/20.500.11937/31079 10.1071/CH05319 CSIRO Publishing restricted |
| spellingShingle | SOLVENT WATER MOLECULAR-BEAM IONIZATION NEUTRAL CLUSTERS LASER-DESORPTION IRRADIATION IR LASER IONIZATION/DESORPTION MASS-SPECTROMETRY COMPLEXES Maselli, O. Gascooke, J. Kobelt, S. Metha, G. Buntine, Mark Rotational energy distributions of benzene liberated from aqueous liquid microjets: A comparison between evaporation and infrared desorption |
| title | Rotational energy distributions of benzene liberated from aqueous liquid microjets: A comparison between evaporation and infrared desorption |
| title_full | Rotational energy distributions of benzene liberated from aqueous liquid microjets: A comparison between evaporation and infrared desorption |
| title_fullStr | Rotational energy distributions of benzene liberated from aqueous liquid microjets: A comparison between evaporation and infrared desorption |
| title_full_unstemmed | Rotational energy distributions of benzene liberated from aqueous liquid microjets: A comparison between evaporation and infrared desorption |
| title_short | Rotational energy distributions of benzene liberated from aqueous liquid microjets: A comparison between evaporation and infrared desorption |
| title_sort | rotational energy distributions of benzene liberated from aqueous liquid microjets: a comparison between evaporation and infrared desorption |
| topic | SOLVENT WATER MOLECULAR-BEAM IONIZATION NEUTRAL CLUSTERS LASER-DESORPTION IRRADIATION IR LASER IONIZATION/DESORPTION MASS-SPECTROMETRY COMPLEXES |
| url | http://hdl.handle.net/20.500.11937/31079 |