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Title: Communication: Observation of dipole-bound state and high-resolution photoelectron imaging of cold acetate anions

Abstract

We report the observation of a dipole-bound state and a high-resolution photoelectron imaging study of cryogenically cooled acetate anions (CH{sub 3}COO{sup −}). Both high-resolution non-resonant and resonant photoelectron spectra via the dipole-bound state of CH{sub 3}COO{sup −} are obtained. The binding energy of the dipole-bound state relative to the detachment threshold is determined to be 53 ± 8 cm{sup −1}. The electron affinity of the CH{sub 3}COO neutral radical is measured accurately as 26 236 ± 8 cm{sup −1} (3.2528 ± 0.0010 eV) using high-resolution photoelectron imaging. This accurate electron affinity is validated by observation of autodetachment from two vibrational levels of the dipole-bound state of CH{sub 3}COO{sup −}. Excitation spectra to the dipole-bound states yield rotational profiles, allowing the rotational temperature of the trapped CH{sub 3}COO{sup −} anions to be evaluated.

Authors:
; ;  [1]
  1. Department of Chemistry, Brown University, Providence, Rhode Island 02912 (United States)
Publication Date:
OSTI Identifier:
22416197
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 142; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ACETATES; AFFINITY; ANIONS; BINDING ENERGY; BOUND STATE; DIPOLES; ELECTRON SPECTRA; EV RANGE; EXCITATION; PHOTOELECTRON SPECTROSCOPY; RADICALS; RESOLUTION; TRAPPING; VIBRATIONAL STATES; YIELDS

Citation Formats

Huang, Dao-Ling, Zhu, Guo-Zhu, and Wang, Lai-Sheng, E-mail: Lai-Sheng-Wang@brown.edu. Communication: Observation of dipole-bound state and high-resolution photoelectron imaging of cold acetate anions. United States: N. p., 2015. Web. doi:10.1063/1.4913924.
Huang, Dao-Ling, Zhu, Guo-Zhu, & Wang, Lai-Sheng, E-mail: Lai-Sheng-Wang@brown.edu. Communication: Observation of dipole-bound state and high-resolution photoelectron imaging of cold acetate anions. United States. doi:10.1063/1.4913924.
Huang, Dao-Ling, Zhu, Guo-Zhu, and Wang, Lai-Sheng, E-mail: Lai-Sheng-Wang@brown.edu. Sat . "Communication: Observation of dipole-bound state and high-resolution photoelectron imaging of cold acetate anions". United States. doi:10.1063/1.4913924.
@article{osti_22416197,
title = {Communication: Observation of dipole-bound state and high-resolution photoelectron imaging of cold acetate anions},
author = {Huang, Dao-Ling and Zhu, Guo-Zhu and Wang, Lai-Sheng, E-mail: Lai-Sheng-Wang@brown.edu},
abstractNote = {We report the observation of a dipole-bound state and a high-resolution photoelectron imaging study of cryogenically cooled acetate anions (CH{sub 3}COO{sup −}). Both high-resolution non-resonant and resonant photoelectron spectra via the dipole-bound state of CH{sub 3}COO{sup −} are obtained. The binding energy of the dipole-bound state relative to the detachment threshold is determined to be 53 ± 8 cm{sup −1}. The electron affinity of the CH{sub 3}COO neutral radical is measured accurately as 26 236 ± 8 cm{sup −1} (3.2528 ± 0.0010 eV) using high-resolution photoelectron imaging. This accurate electron affinity is validated by observation of autodetachment from two vibrational levels of the dipole-bound state of CH{sub 3}COO{sup −}. Excitation spectra to the dipole-bound states yield rotational profiles, allowing the rotational temperature of the trapped CH{sub 3}COO{sup −} anions to be evaluated.},
doi = {10.1063/1.4913924},
journal = {Journal of Chemical Physics},
number = 9,
volume = 142,
place = {United States},
year = {Sat Mar 07 00:00:00 EST 2015},
month = {Sat Mar 07 00:00:00 EST 2015}
}