Abstract
I- H2 O and I- CH3 CN cluster anion photodetachment properties (photoelectron spectra and angular distributions) are recorded via velocity mapped photoelectron imaging for wavelengths between 270 and 340 nm, in small energy increments. These are compared with free I- detachment results and reveal the presence of a sharp change in the angular distribution for the P2 3/2 spin orbit channel in the vicinity of the P2 1/2 threshold. The effect is seen at this threshold in the I- H2 O cluster anion and just below threshold for I- CH3 CN. The effect is attributed to an electronic autodetachment process, which is dependent on electronic energy transfer mediated by the electron-neutral complex produced in the excitation process. These results highlight the potential of cluster anion detachment as a probe of electron-molecule interactions and in particular the sensitivity of the angular distributions to intracluster electron transfer processes.
| Original language | English |
|---|---|
| Article number | 134304 |
| Journal | Journal of Chemical Physics |
| Volume | 132 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - Apr 7 2010 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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Threshold effects in I- CH3 CN and I- H2 O cluster anion detachment : The angular distribution as an indicator of electronic autodetachment. / Mbaiwa, Foster; Wei, Jie; Van Duzor, Matthew; Mabbs, Richard.
In: Journal of Chemical Physics, Vol. 132, No. 13, 134304, 07.04.2010.Research output: Contribution to journal › Article
TY - JOUR
T1 - Threshold effects in I- CH3 CN and I- H2 O cluster anion detachment
T2 - The angular distribution as an indicator of electronic autodetachment
AU - Mbaiwa, Foster
AU - Wei, Jie
AU - Van Duzor, Matthew
AU - Mabbs, Richard
PY - 2010/4/7
Y1 - 2010/4/7
N2 - I- H2 O and I- CH3 CN cluster anion photodetachment properties (photoelectron spectra and angular distributions) are recorded via velocity mapped photoelectron imaging for wavelengths between 270 and 340 nm, in small energy increments. These are compared with free I- detachment results and reveal the presence of a sharp change in the angular distribution for the P2 3/2 spin orbit channel in the vicinity of the P2 1/2 threshold. The effect is seen at this threshold in the I- H2 O cluster anion and just below threshold for I- CH3 CN. The effect is attributed to an electronic autodetachment process, which is dependent on electronic energy transfer mediated by the electron-neutral complex produced in the excitation process. These results highlight the potential of cluster anion detachment as a probe of electron-molecule interactions and in particular the sensitivity of the angular distributions to intracluster electron transfer processes.
AB - I- H2 O and I- CH3 CN cluster anion photodetachment properties (photoelectron spectra and angular distributions) are recorded via velocity mapped photoelectron imaging for wavelengths between 270 and 340 nm, in small energy increments. These are compared with free I- detachment results and reveal the presence of a sharp change in the angular distribution for the P2 3/2 spin orbit channel in the vicinity of the P2 1/2 threshold. The effect is seen at this threshold in the I- H2 O cluster anion and just below threshold for I- CH3 CN. The effect is attributed to an electronic autodetachment process, which is dependent on electronic energy transfer mediated by the electron-neutral complex produced in the excitation process. These results highlight the potential of cluster anion detachment as a probe of electron-molecule interactions and in particular the sensitivity of the angular distributions to intracluster electron transfer processes.
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U2 - 10.1063/1.3380664
DO - 10.1063/1.3380664
M3 - Article
VL - 132
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 13
M1 - 134304
ER -