TY - JOUR
T1 - Solvent resonance effect on the anisotropy of N O- (N2 O)n cluster anion photodetachment
AU - Velarde, Luis
AU - Habteyes, Terefe
AU - Grumbling, Emily R.
AU - Pichugin, Kostyantyn
AU - Sanov, Andrei
PY - 2007
Y1 - 2007
N2 - Photodetachment from N O- (N2 O)n cluster anions (n≤7) is investigated using photoelectron imaging at 786, 532, and 355 nm. Compared to unsolvated N O-, the photoelectron anisotropy with respect to the laser polarization direction diminishes drastically in the presence of the N2 O solvent, especially in the 355 nm data. In contrast, a less significant anisotropy loss is observed for N O- (H2 O)n. The effect is attributed to photoelectron scattering on the solvent, which in the N2 O case is mediated by the Π2 anionic resonance. No anionic resonances exist for H2 O in the applicable photoelectron energy range, in line with the observed difference between the photoelectron images obtained with the two solvents. The momentum-transfer cross section, rather than the total scattering cross section, is argued to be an appropriate physical parameter predicting the solvent effects on the photoelectron angular distributions in these cluster anions.
AB - Photodetachment from N O- (N2 O)n cluster anions (n≤7) is investigated using photoelectron imaging at 786, 532, and 355 nm. Compared to unsolvated N O-, the photoelectron anisotropy with respect to the laser polarization direction diminishes drastically in the presence of the N2 O solvent, especially in the 355 nm data. In contrast, a less significant anisotropy loss is observed for N O- (H2 O)n. The effect is attributed to photoelectron scattering on the solvent, which in the N2 O case is mediated by the Π2 anionic resonance. No anionic resonances exist for H2 O in the applicable photoelectron energy range, in line with the observed difference between the photoelectron images obtained with the two solvents. The momentum-transfer cross section, rather than the total scattering cross section, is argued to be an appropriate physical parameter predicting the solvent effects on the photoelectron angular distributions in these cluster anions.
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U2 - 10.1063/1.2766948
DO - 10.1063/1.2766948
M3 - Article
AN - SCOPUS:34548432679
SN - 0021-9606
VL - 127
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
IS - 8
M1 - 084302
ER -