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Yields and Time-of-Flight Spectra of Neutral High-Rydberg Fragments at the K Edges of the CO2 Molecule

Kivimäki, Antti LU ; Stråhlman, Christian LU ; Wasowicz, Tomasz J. ; Kettunen, J. A. LU and Richter, Robert (2016) In The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory 120(25). p.4360-4367
Abstract

We have studied the production of neutral fragments in high-Rydberg (HR) states at the C 1s and O 1s edges of the CO2 molecule by performing two kinds of experiments. First, the yields of neutral HR fragments were measured indirectly by ionizing such fragments in a static electric field and by collecting resulting singly charged positive ions as a function of the photon energy. Such measurements reveal not only excitations below the core ionization thresholds but also thresholds for single core-hole and shakeup photoionization. Second, we obtained the mass spectra of neutral HR fragments at selected photon energies by exploiting pulsed field ionization; they show atomic fragments C(HR) and O(HR). We discuss dissociation... (More)

We have studied the production of neutral fragments in high-Rydberg (HR) states at the C 1s and O 1s edges of the CO2 molecule by performing two kinds of experiments. First, the yields of neutral HR fragments were measured indirectly by ionizing such fragments in a static electric field and by collecting resulting singly charged positive ions as a function of the photon energy. Such measurements reveal not only excitations below the core ionization thresholds but also thresholds for single core-hole and shakeup photoionization. Second, we obtained the mass spectra of neutral HR fragments at selected photon energies by exploiting pulsed field ionization; they show atomic fragments C(HR) and O(HR). We discuss dissociation pathways leading to the production of neutral HR fragments in core excitation and ionization of CO2.

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organization
publishing date
type
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publication status
published
subject
in
The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
volume
120
issue
25
pages
8 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:27276338
  • wos:000379456300012
  • scopus:84976907420
ISSN
1089-5639
DOI
10.1021/acs.jpca.6b04495
language
English
LU publication?
yes
id
30af7c7f-f42e-4750-8534-f8644625757e
date added to LUP
2017-01-19 09:34:38
date last changed
2025-04-04 15:22:23
@article{30af7c7f-f42e-4750-8534-f8644625757e,
  abstract     = {{<p>We have studied the production of neutral fragments in high-Rydberg (HR) states at the C 1s and O 1s edges of the CO<sub>2</sub> molecule by performing two kinds of experiments. First, the yields of neutral HR fragments were measured indirectly by ionizing such fragments in a static electric field and by collecting resulting singly charged positive ions as a function of the photon energy. Such measurements reveal not only excitations below the core ionization thresholds but also thresholds for single core-hole and shakeup photoionization. Second, we obtained the mass spectra of neutral HR fragments at selected photon energies by exploiting pulsed field ionization; they show atomic fragments C(HR) and O(HR). We discuss dissociation pathways leading to the production of neutral HR fragments in core excitation and ionization of CO<sub>2</sub>.</p>}},
  author       = {{Kivimäki, Antti and Stråhlman, Christian and Wasowicz, Tomasz J. and Kettunen, J. A. and Richter, Robert}},
  issn         = {{1089-5639}},
  language     = {{eng}},
  month        = {{06}},
  number       = {{25}},
  pages        = {{4360--4367}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory}},
  title        = {{Yields and Time-of-Flight Spectra of Neutral High-Rydberg Fragments at the K Edges of the CO<sub>2</sub> Molecule}},
  url          = {{http://dx.doi.org/10.1021/acs.jpca.6b04495}},
  doi          = {{10.1021/acs.jpca.6b04495}},
  volume       = {{120}},
  year         = {{2016}},
}