Fluorescence emission from photo-fragments after resonant S 2p excitations in H2S
(2007) In Physical Chemistry Chemical Physics 9(3). p.389-395- Abstract
- Visible-UV fluorescence emission of gas-phase hydrogen sulfide, H(2)S, has been studied at the S 2p edge with synchrotron radiation excitation. Dispersed fluorescence measurements in the wavelength range 300-900 nm were taken at several photon energies corresponding to the excitations of the S 2p electrons to the unoccupied molecular and Rydberg orbitals. The spectra reveal fluorescence from the H, S, S(+), HS and HS(+) photo-fragments. H is found to be the strongest emitter at Rydberg excitations, while the emission from S(+) is dominant at the molecular resonances and above the S 2p ionization thresholds. The intensities of hydrogen Lyman-alpha (122 nm), Balmer-alpha (656 nm), Balmer-beta (486 nm) transitions as well as the visible-UV... (More)
- Visible-UV fluorescence emission of gas-phase hydrogen sulfide, H(2)S, has been studied at the S 2p edge with synchrotron radiation excitation. Dispersed fluorescence measurements in the wavelength range 300-900 nm were taken at several photon energies corresponding to the excitations of the S 2p electrons to the unoccupied molecular and Rydberg orbitals. The spectra reveal fluorescence from the H, S, S(+), HS and HS(+) photo-fragments. H is found to be the strongest emitter at Rydberg excitations, while the emission from S(+) is dominant at the molecular resonances and above the S 2p ionization thresholds. The intensities of hydrogen Lyman-alpha (122 nm), Balmer-alpha (656 nm), Balmer-beta (486 nm) transitions as well as the visible-UV total fluorescence yield (300-900 nm) and the total ion yield were measured by scanning the photon energy in small steps across the S 2p edge. The different Balmer lines show some sensitivity to the specific core excitations, which is, however, not so strong as that recently observed in the water molecule [E. Melero García, A. Kivimäki, L. G. M. Pettersson, J. Alvarez Ruiz, M. Coreno, M. de Simone, R. Richter and K. C. Prince, Phys. Rev. Lett., 2006, 96, 063003]. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1156037
- author
- Vall-llosera, Gemma LU ; Melero García, Emilio ; Kivimäki, Antti ; Rachlew, Elisabeth ; Coreno, Marcello ; de Simone, Monica ; Richter, Robert and Prince, Kevin C.
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Chemistry Chemical Physics
- volume
- 9
- issue
- 3
- pages
- 389 - 395
- publisher
- Royal Society of Chemistry
- external identifiers
-
- pmid:17199155
- scopus:33845962796
- ISSN
- 1463-9084
- DOI
- 10.1039/b610199b
- language
- English
- LU publication?
- no
- id
- 1b197360-c04d-4798-b0ae-064951bff45c (old id 1156037)
- date added to LUP
- 2016-04-04 09:13:31
- date last changed
- 2022-01-29 08:50:02
@article{1b197360-c04d-4798-b0ae-064951bff45c, abstract = {{Visible-UV fluorescence emission of gas-phase hydrogen sulfide, H(2)S, has been studied at the S 2p edge with synchrotron radiation excitation. Dispersed fluorescence measurements in the wavelength range 300-900 nm were taken at several photon energies corresponding to the excitations of the S 2p electrons to the unoccupied molecular and Rydberg orbitals. The spectra reveal fluorescence from the H, S, S(+), HS and HS(+) photo-fragments. H is found to be the strongest emitter at Rydberg excitations, while the emission from S(+) is dominant at the molecular resonances and above the S 2p ionization thresholds. The intensities of hydrogen Lyman-alpha (122 nm), Balmer-alpha (656 nm), Balmer-beta (486 nm) transitions as well as the visible-UV total fluorescence yield (300-900 nm) and the total ion yield were measured by scanning the photon energy in small steps across the S 2p edge. The different Balmer lines show some sensitivity to the specific core excitations, which is, however, not so strong as that recently observed in the water molecule [E. Melero García, A. Kivimäki, L. G. M. Pettersson, J. Alvarez Ruiz, M. Coreno, M. de Simone, R. Richter and K. C. Prince, Phys. Rev. Lett., 2006, 96, 063003].}}, author = {{Vall-llosera, Gemma and Melero García, Emilio and Kivimäki, Antti and Rachlew, Elisabeth and Coreno, Marcello and de Simone, Monica and Richter, Robert and Prince, Kevin C.}}, issn = {{1463-9084}}, language = {{eng}}, number = {{3}}, pages = {{389--395}}, publisher = {{Royal Society of Chemistry}}, series = {{Physical Chemistry Chemical Physics}}, title = {{Fluorescence emission from photo-fragments after resonant S 2p excitations in H2S}}, url = {{http://dx.doi.org/10.1039/b610199b}}, doi = {{10.1039/b610199b}}, volume = {{9}}, year = {{2007}}, }