Threshold effects in I- CH3 CN and I- H2 O cluster anion detachment

The angular distribution as an indicator of electronic autodetachment

Foster Mbaiwa, Jie Wei, Matthew Van Duzor, Richard Mabbs

Research output: Contribution to journalArticle

16 Citations (Scopus)

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 languageEnglish
Article number134304
JournalJournal of Chemical Physics
Volume132
Issue number13
DOIs
Publication statusPublished - Apr 7 2010

Fingerprint

Angular distribution
detachment
Anions
angular distribution
Photoelectrons
anions
thresholds
Electrons
photoelectrons
electronics
photodetachment
Energy transfer
electron transfer
Orbits
electrons
energy transfer
orbits
Imaging techniques
Wavelength
Molecules

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

@article{bf1fc6248c7b4c3184530d30b6159fc5,
title = "Threshold effects in I- CH3 CN and I- H2 O cluster anion detachment: The angular distribution as an indicator of electronic autodetachment",
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.",
author = "Foster Mbaiwa and Jie Wei and {Van Duzor}, Matthew and Richard Mabbs",
year = "2010",
month = "4",
day = "7",
doi = "10.1063/1.3380664",
language = "English",
volume = "132",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics Publising LLC",
number = "13",

}

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 journalArticle

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.

UR - http://www.scopus.com/inward/record.url?scp=77954835463&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954835463&partnerID=8YFLogxK

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 -