TY - JOUR
T1 - VUV photon induced fluorescence study of SF5CF3
AU - Alvarez Ruiz, Jesus
AU - Kivimäki, Antti
AU - Stankiewicz, Marek
AU - Melero García, Emilio
AU - Coreno, Marcello
AU - Ali, Sahangir
AU - Koperski, Jaroslaw
AU - Rachlew, Elisabeth
AU - Vall-llosera I Serrano, Gemma
AU - Feyer, Vitaliy
AU - Tuckett, Richard
AU - de Simone, M
PY - 2006/10/10
Y1 - 2006/10/10
N2 - The interaction of SF\(_5\)CF\(_3\) with vacuum-UV radiation has been investigated by photon induced fluorescence spectroscopy. Total fluorescence yield and dispersed fluorescence spectra of SF\(_5\)CF\(_3\) were recorded in the 200-1000 nm fluorescence window. In all cases, the fluorescence spectra resemble those of CF\(_3\)X (X=H, F, Cl, and Br) molecules. At photon energies below 20 eV, the emission is attributed to the excited CF\(_3\) and CF\(_2\) fragments. The threshold for the CF\(_3\) emission is 10.2 ± 0.2 eV, giving an upper-limit estimate for the SF\(_5\)-CF\(_3\) bond dissociation energy of 3.9 ± 0.3 eV. The excitation functions of the CF3 and CF2 emissions were measured in the photon energy range 13.6 – 27.0 eV. The resonant structures observed in SF\(_5\)CF\(_3\) are attributed to electronic transitions from valence to Rydberg orbitals, following similar assignments in CF\(_3\)X molecules. The photoabsorption spectrum of SF\(_5\)CF\(_3\) shows features at the same energies, indicating a strong contribution from Rydberg excitations.
AB - The interaction of SF\(_5\)CF\(_3\) with vacuum-UV radiation has been investigated by photon induced fluorescence spectroscopy. Total fluorescence yield and dispersed fluorescence spectra of SF\(_5\)CF\(_3\) were recorded in the 200-1000 nm fluorescence window. In all cases, the fluorescence spectra resemble those of CF\(_3\)X (X=H, F, Cl, and Br) molecules. At photon energies below 20 eV, the emission is attributed to the excited CF\(_3\) and CF\(_2\) fragments. The threshold for the CF\(_3\) emission is 10.2 ± 0.2 eV, giving an upper-limit estimate for the SF\(_5\)-CF\(_3\) bond dissociation energy of 3.9 ± 0.3 eV. The excitation functions of the CF3 and CF2 emissions were measured in the photon energy range 13.6 – 27.0 eV. The resonant structures observed in SF\(_5\)CF\(_3\) are attributed to electronic transitions from valence to Rydberg orbitals, following similar assignments in CF\(_3\)X molecules. The photoabsorption spectrum of SF\(_5\)CF\(_3\) shows features at the same energies, indicating a strong contribution from Rydberg excitations.
UR - http://www.scopus.com/inward/record.url?scp=33750908787&partnerID=8YFLogxK
U2 - 10.1039/b609314k
DO - 10.1039/b609314k
M3 - Article
SN - 1463-9084
VL - 8
SP - 5199
EP - 5206
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
IS - 44
ER -