Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Fluorescence emission from photo-fragments after resonant S 2p excitations in H2S

Vall-llosera, Gemma LU ; Melero García, Emilio ; Kivimäki, Antti ; Rachlew, Elisabeth ; Coreno, Marcello ; de Simone, Monica ; Richter, Robert and Prince, Kevin C. (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:
author
; ; ; ; ; ; and
publishing date
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}},
}