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• W2069060430 abstract "Photoelectron spectra and angular distributions in 267 nm detachment of the I(-)Ar, I(-)H(2)O, I(-)CH(3)I, and I(-)CH(3)CN cluster anions are examined in comparison with bare I(-) using velocity-map photoelectron imaging. In all cases, features are observed that correlate to two channels producing either I((2)P(3/2)) or I((2)P(1/2)). In the photodetachment of I(-) and I(-)Ar, the branching ratios of the (2)P(1/2) and (2)P(3/2) channels are observed to be approximately 0.4, in both cases falling short of the statistical ratio of 0.5. For I(-)H(2)O and I(-)CH(3)I, the (2)P(1/2) to (2)P(3/2) branching ratios are greater by a factor of 1.6 compared to the bare iodide case. The relative enhancement of the (2)P(1/2) channel is attributed to dipole effects on the final-state continuum wave function in the presence of polar solvents. For I(-)CH(3)CN the (2)P(1/2) to (2)P(3/2) ratio falls again, most likely due to the proximity of the detachment threshold in the excited spin-orbit channel. The photoelectron angular distributions in the photodetachment of I(-), I(-)Ar, I(-)H(2)O, and I(-)CH(3)CN are understood within the framework of direct detachment from I(-). Hence, the corresponding anisotropy parameters are modeled using variants of the Cooper-Zare central-potential model for atomic-anion photodetachment. In contrast, I(-)CH(3)I yields nearly isotropic photoelectron angular distributions in both detachment channels. The implications of this anomalous behavior are discussed with reference to alternative mechanisms, affording the solvent molecule an active role in the electron ejection process." @default.
• W2069060430 created "2016-06-24" @default.
• W2069060430 creator A5002267648 @default.
• W2069060430 creator A5021940253 @default.
• W2069060430 creator A5056656869 @default.
• W2069060430 date "2005-01-18" @default.
• W2069060430 modified "2023-10-18" @default.
• W2069060430 title "Photoelectron anisotropy and channel branching ratios in the detachment of solvated iodide cluster anions" @default.
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• W2069060430 doi "https://doi.org/10.1063/1.1839861" @default.
• W2069060430 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15740323" @default.
• W2069060430 hasPublicationYear "2005" @default.
• W2069060430 type Work @default.
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