Accurate measurement of the T-shaped and linear Ar ⋯ i 2 (X, ν' = 0) binding energies using vibronic-specific I 2(B, ν) fragment velocity-map imaging

Jie Wei, Camille Makarem, Ashley L. Reinitz, Joshua P. Darr, Richard A. Loomis

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Ion time-of-flight slow fragment velocity imaging (SFVI) is combined with laser-induced fluorescence spectroscopy measurements to accurately determine the binding energies of the T-shaped and linear conformers of the ground-state Ar⋯I 2(X, ν″=0) complex. The fluorescence-based measurements were used to optimize the conditions for preferentially stabilizing either the T-shaped or linear conformers, and to ensure proper excitation energetics for the SFVI experiments. In the ion-imaging experiments, the kinetic energy distributions of specific I 2(B, ν) fragments formed with very low kinetic energies via dissociation of initially prepared Ar⋯I 2(B, ν′) intermolecular vibrational levels were imaged to measure the binding energies of the linear and T-shaped conformers. The linear conformer is energetically preferred, with a binding energy of 250.3(2.7) cm -1, over the T-shaped conformer, with a binding energy of 240.5(3.6) cm -1. These values are compared with previously reported data from high-level ab initio calculations and experiments.

Original languageEnglish (US)
Pages (from-to)172-179
Number of pages8
JournalChemical Physics
Volume399
DOIs
StatePublished - May 3 2012

Fingerprint

Binding energy
binding energy
fragments
Imaging techniques
Kinetic energy
kinetic energy
Ions
Experiments
Fluorescence spectroscopy
laser induced fluorescence
Ground state
energy distribution
ions
Fluorescence
dissociation
fluorescence
ground state
Lasers
spectroscopy
excitation

Keywords

  • ArI
  • Binding energies
  • LIF
  • Laser-induced fluorescence
  • Rare gas-dihalogen complexes
  • SFVI
  • VMI
  • Van der Waals complexes
  • Velocity map imaging

ASJC Scopus subject areas

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

Cite this

Accurate measurement of the T-shaped and linear Ar ⋯ i 2 (X, ν' = 0) binding energies using vibronic-specific I 2(B, ν) fragment velocity-map imaging. / Wei, Jie; Makarem, Camille; Reinitz, Ashley L.; Darr, Joshua P.; Loomis, Richard A.

In: Chemical Physics, Vol. 399, 03.05.2012, p. 172-179.

Research output: Contribution to journalArticle

@article{c7ad862abde94b64b0374e75fa75d4ed,
title = "Accurate measurement of the T-shaped and linear Ar ⋯ i 2 (X, ν' = 0) binding energies using vibronic-specific I 2(B, ν) fragment velocity-map imaging",
abstract = "Ion time-of-flight slow fragment velocity imaging (SFVI) is combined with laser-induced fluorescence spectroscopy measurements to accurately determine the binding energies of the T-shaped and linear conformers of the ground-state Ar⋯I 2(X, ν″=0) complex. The fluorescence-based measurements were used to optimize the conditions for preferentially stabilizing either the T-shaped or linear conformers, and to ensure proper excitation energetics for the SFVI experiments. In the ion-imaging experiments, the kinetic energy distributions of specific I 2(B, ν) fragments formed with very low kinetic energies via dissociation of initially prepared Ar⋯I 2(B, ν′) intermolecular vibrational levels were imaged to measure the binding energies of the linear and T-shaped conformers. The linear conformer is energetically preferred, with a binding energy of 250.3(2.7) cm -1, over the T-shaped conformer, with a binding energy of 240.5(3.6) cm -1. These values are compared with previously reported data from high-level ab initio calculations and experiments.",
keywords = "ArI, Binding energies, LIF, Laser-induced fluorescence, Rare gas-dihalogen complexes, SFVI, VMI, Van der Waals complexes, Velocity map imaging",
author = "Jie Wei and Camille Makarem and Reinitz, {Ashley L.} and Darr, {Joshua P.} and Loomis, {Richard A.}",
year = "2012",
month = "5",
day = "3",
doi = "10.1016/j.chemphys.2011.06.039",
language = "English (US)",
volume = "399",
pages = "172--179",
journal = "Chemical Physics",
issn = "0301-0104",
publisher = "Elsevier",

}

TY - JOUR

T1 - Accurate measurement of the T-shaped and linear Ar ⋯ i 2 (X, ν' = 0) binding energies using vibronic-specific I 2(B, ν) fragment velocity-map imaging

AU - Wei, Jie

AU - Makarem, Camille

AU - Reinitz, Ashley L.

AU - Darr, Joshua P.

AU - Loomis, Richard A.

PY - 2012/5/3

Y1 - 2012/5/3

N2 - Ion time-of-flight slow fragment velocity imaging (SFVI) is combined with laser-induced fluorescence spectroscopy measurements to accurately determine the binding energies of the T-shaped and linear conformers of the ground-state Ar⋯I 2(X, ν″=0) complex. The fluorescence-based measurements were used to optimize the conditions for preferentially stabilizing either the T-shaped or linear conformers, and to ensure proper excitation energetics for the SFVI experiments. In the ion-imaging experiments, the kinetic energy distributions of specific I 2(B, ν) fragments formed with very low kinetic energies via dissociation of initially prepared Ar⋯I 2(B, ν′) intermolecular vibrational levels were imaged to measure the binding energies of the linear and T-shaped conformers. The linear conformer is energetically preferred, with a binding energy of 250.3(2.7) cm -1, over the T-shaped conformer, with a binding energy of 240.5(3.6) cm -1. These values are compared with previously reported data from high-level ab initio calculations and experiments.

AB - Ion time-of-flight slow fragment velocity imaging (SFVI) is combined with laser-induced fluorescence spectroscopy measurements to accurately determine the binding energies of the T-shaped and linear conformers of the ground-state Ar⋯I 2(X, ν″=0) complex. The fluorescence-based measurements were used to optimize the conditions for preferentially stabilizing either the T-shaped or linear conformers, and to ensure proper excitation energetics for the SFVI experiments. In the ion-imaging experiments, the kinetic energy distributions of specific I 2(B, ν) fragments formed with very low kinetic energies via dissociation of initially prepared Ar⋯I 2(B, ν′) intermolecular vibrational levels were imaged to measure the binding energies of the linear and T-shaped conformers. The linear conformer is energetically preferred, with a binding energy of 250.3(2.7) cm -1, over the T-shaped conformer, with a binding energy of 240.5(3.6) cm -1. These values are compared with previously reported data from high-level ab initio calculations and experiments.

KW - ArI

KW - Binding energies

KW - LIF

KW - Laser-induced fluorescence

KW - Rare gas-dihalogen complexes

KW - SFVI

KW - VMI

KW - Van der Waals complexes

KW - Velocity map imaging

UR - http://www.scopus.com/inward/record.url?scp=84861344597&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861344597&partnerID=8YFLogxK

U2 - 10.1016/j.chemphys.2011.06.039

DO - 10.1016/j.chemphys.2011.06.039

M3 - Article

AN - SCOPUS:84861344597

VL - 399

SP - 172

EP - 179

JO - Chemical Physics

JF - Chemical Physics

SN - 0301-0104

ER -