Abstract
Collision-energy dependence of partial Penning ionization cross-sections (CEDPICS) of OCS was obtained from collision-energy/electron-energy-resolved two-dimensional spectrum with a highly sensitive electron energy analyzer. The negative CEDPICS for X2Π and C2Σ+ states indicates attractive interaction around S and O atoms with He *(23S), where the corresponding 3π(S 3p-O2p) and 8σ(σCO) orbitals extend, respectively. Utilizing classical trajectory calculations for CEDPICS and optimization of model potential energy surface, a large ring-like attractive well with a depth of ca. 120 meV was found for perpendicular directions around C S axis and smaller interaction was found in the collinear direction of the C O axis with well depth of ca. 70 meV around the oxygen atom in the lone pair region by sp2 hybridization.
| Original language | English |
|---|---|
| Pages (from-to) | 332-339 |
| Number of pages | 8 |
| Journal | Chemical Physics Letters |
| Volume | 379 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - Sep 26 2003 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
Cite this
Collision-energy-resolved Penning ionization electron spectroscopy of OCS with He*(23S) metastable atoms. / Kishimoto, Naoki; Horio, Takuya; Maeda, Satoshi; Ohno, Koichi.
In: Chemical Physics Letters, Vol. 379, No. 3-4, 26.09.2003, p. 332-339.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Collision-energy-resolved Penning ionization electron spectroscopy of OCS with He*(23S) metastable atoms
AU - Kishimoto, Naoki
AU - Horio, Takuya
AU - Maeda, Satoshi
AU - Ohno, Koichi
PY - 2003/9/26
Y1 - 2003/9/26
N2 - Collision-energy dependence of partial Penning ionization cross-sections (CEDPICS) of OCS was obtained from collision-energy/electron-energy-resolved two-dimensional spectrum with a highly sensitive electron energy analyzer. The negative CEDPICS for X2Π and C2Σ+ states indicates attractive interaction around S and O atoms with He *(23S), where the corresponding 3π(S 3p-O2p) and 8σ(σCO) orbitals extend, respectively. Utilizing classical trajectory calculations for CEDPICS and optimization of model potential energy surface, a large ring-like attractive well with a depth of ca. 120 meV was found for perpendicular directions around C S axis and smaller interaction was found in the collinear direction of the C O axis with well depth of ca. 70 meV around the oxygen atom in the lone pair region by sp2 hybridization.
AB - Collision-energy dependence of partial Penning ionization cross-sections (CEDPICS) of OCS was obtained from collision-energy/electron-energy-resolved two-dimensional spectrum with a highly sensitive electron energy analyzer. The negative CEDPICS for X2Π and C2Σ+ states indicates attractive interaction around S and O atoms with He *(23S), where the corresponding 3π(S 3p-O2p) and 8σ(σCO) orbitals extend, respectively. Utilizing classical trajectory calculations for CEDPICS and optimization of model potential energy surface, a large ring-like attractive well with a depth of ca. 120 meV was found for perpendicular directions around C S axis and smaller interaction was found in the collinear direction of the C O axis with well depth of ca. 70 meV around the oxygen atom in the lone pair region by sp2 hybridization.
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U2 - 10.1016/j.cplett.2003.08.046
DO - 10.1016/j.cplett.2003.08.046
M3 - Article
AN - SCOPUS:0141829753
VL - 379
SP - 332
EP - 339
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 3-4
ER -