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Fluorescence emissi...
Fluorescence emission from photo-fragments after resonant S 2p excitations in H2S
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- Vall-llosera, Gemma (författare)
- KTH,Atom- och molekylfysik
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- Melero García, Emilio (författare)
- KTH,Atom- och molekylfysik
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- Kivimäki, Antti (författare)
- CNR-INFM, Laboratorio Nazionale TASC
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- Rachlew, Elisabeth (författare)
- KTH,Atom- och molekylfysik
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- Coreno, Marcello (författare)
- CNR-IMIP, Montelibretti
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- de Simone, Monica (författare)
- CNR-INFM, Laboratorio Nazionale TASC
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- Richter, Robert (författare)
- Sincrotrone Trieste, Basovizza
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- Prince, Kevin C. (författare)
- Sincrotrone Trieste, Basovizza
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(creator_code:org_t)
- 2007
- 2007
- Engelska.
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Ingår i: Physical Chemistry, Chemical Physics - PCCP. - : Royal Society of Chemistry (RSC). - 1463-9076 .- 1463-9084. ; 9:3, s. 389-395
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Visible-UV fluorescence emission of gas-phase hydrogen sulfide, H2S, 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- X-RAY EXCITATION
- DECAY CHANNELS
- PHOTOELECTRON-SPECTROSCOPY
- AUGER DECAY
- MOLECULES
- PHOTOIONIZATION
- STATES
- ATOMS
- Atomic and molecular physics
- Atom- och molekylfysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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