Abstract
Vibrational energy relaxation of the symmetric C-H stretching mode of methyl thiolate on a Ag(111) surface is measured by picosecond infrared-visible sum frequency generation. Vibrational relaxation lifetime components of Approximately 3 ps and 63 ps are observed at 300 K. The long lifetime component shows a moderate temperature dependence. Both population relaxation components are assigned to intramolecular energy transfer on the basis of comparisons with other measurements and the predicted temperature dependence of intramolecular relaxation rates. Direct energy transfer to electronic or vibrational degrees of freedom in the substrate is not found to be important for this vibrational mode.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Editors | S.Nicolas Nogar |
| Publisher | Publ by Int Soc for Optical Engineering |
| Pages | 99-104 |
| Number of pages | 6 |
| Volume | 1208 |
| ISBN (Print) | 0819402494 |
| Publication status | Published - 1990 |
| Event | Laser Photoionization and Desorption Surface Analysis Techniques - Los Angeles, CA, USA Duration: Jan 18 1990 → Jan 19 1990 |
Other
| Other | Laser Photoionization and Desorption Surface Analysis Techniques |
|---|---|
| City | Los Angeles, CA, USA |
| Period | 1/18/90 → 1/19/90 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectroscopy. / Harris, Alex; Rothberg, L.; Dubois, L. H.; Levinos, N. J.; Dhar, L.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / S.Nicolas Nogar. Vol. 1208 Publ by Int Soc for Optical Engineering, 1990. p. 99-104.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectroscopy
AU - Harris, Alex
AU - Rothberg, L.
AU - Dubois, L. H.
AU - Levinos, N. J.
AU - Dhar, L.
PY - 1990
Y1 - 1990
N2 - Vibrational energy relaxation of the symmetric C-H stretching mode of methyl thiolate on a Ag(111) surface is measured by picosecond infrared-visible sum frequency generation. Vibrational relaxation lifetime components of Approximately 3 ps and 63 ps are observed at 300 K. The long lifetime component shows a moderate temperature dependence. Both population relaxation components are assigned to intramolecular energy transfer on the basis of comparisons with other measurements and the predicted temperature dependence of intramolecular relaxation rates. Direct energy transfer to electronic or vibrational degrees of freedom in the substrate is not found to be important for this vibrational mode.
AB - Vibrational energy relaxation of the symmetric C-H stretching mode of methyl thiolate on a Ag(111) surface is measured by picosecond infrared-visible sum frequency generation. Vibrational relaxation lifetime components of Approximately 3 ps and 63 ps are observed at 300 K. The long lifetime component shows a moderate temperature dependence. Both population relaxation components are assigned to intramolecular energy transfer on the basis of comparisons with other measurements and the predicted temperature dependence of intramolecular relaxation rates. Direct energy transfer to electronic or vibrational degrees of freedom in the substrate is not found to be important for this vibrational mode.
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M3 - Conference contribution
AN - SCOPUS:0025685894
SN - 0819402494
VL - 1208
SP - 99
EP - 104
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Nogar, S.Nicolas
PB - Publ by Int Soc for Optical Engineering
ER -