Angle-resolved photoelectron spectra of CF3Br and CF2Br2 in the photon energy range 29-115 eV

I. Novak, J. M. Benson, A. W. Potts

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Abstract

Photoelectron asymmetry parameters β and partial photoionization cross sections have been measured for ionization from the molecular orbitals of CF3Br and CF2Br2 using synchrotron radiation in the photon energy range from 19 to 115 eV. Cooper minima are observed in the β spectra for ionizations from orbitals with substantial bromine 4p character. The measured positions of the minima have been compared to the results of non-relativistic calculations performed for different elements of the periodic system. Several shape resonances have been observed in β spectra associated with orbitals of predominantly F(2p) character. Ionization from the Br(3d) subshell has also been observed and studied in some detail. Auger transitions involving 3d electrons have been observed at higher photon energies.

Original languageEnglish
Pages (from-to)153-160
Number of pages8
JournalChemical Physics
Volume104
Issue number1
DOIs
Publication statusPublished - 15 Apr 1986

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Photoelectrons
Ionization
photoelectrons
Photons
ionization
photons
Bromine
orbitals
Photoionization
Time varying systems
Molecular orbitals
bromine
Electron transitions
Synchrotron radiation
energy
photoionization
molecular orbitals
synchrotron radiation
asymmetry
Electrons

Cite this

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abstract = "Photoelectron asymmetry parameters β and partial photoionization cross sections have been measured for ionization from the molecular orbitals of CF3Br and CF2Br2 using synchrotron radiation in the photon energy range from 19 to 115 eV. Cooper minima are observed in the β spectra for ionizations from orbitals with substantial bromine 4p character. The measured positions of the minima have been compared to the results of non-relativistic calculations performed for different elements of the periodic system. Several shape resonances have been observed in β spectra associated with orbitals of predominantly F(2p) character. Ionization from the Br(3d) subshell has also been observed and studied in some detail. Auger transitions involving 3d electrons have been observed at higher photon energies.",
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Angle-resolved photoelectron spectra of CF3Br and CF2Br2 in the photon energy range 29-115 eV. / Novak, I.; Benson, J. M.; Potts, A. W.

In: Chemical Physics, Vol. 104, No. 1, 15.04.1986, p. 153-160.

Research output: Contribution to journalArticle

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T1 - Angle-resolved photoelectron spectra of CF3Br and CF2Br2 in the photon energy range 29-115 eV

AU - Novak, I.

AU - Benson, J. M.

AU - Potts, A. W.

PY - 1986/4/15

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AB - Photoelectron asymmetry parameters β and partial photoionization cross sections have been measured for ionization from the molecular orbitals of CF3Br and CF2Br2 using synchrotron radiation in the photon energy range from 19 to 115 eV. Cooper minima are observed in the β spectra for ionizations from orbitals with substantial bromine 4p character. The measured positions of the minima have been compared to the results of non-relativistic calculations performed for different elements of the periodic system. Several shape resonances have been observed in β spectra associated with orbitals of predominantly F(2p) character. Ionization from the Br(3d) subshell has also been observed and studied in some detail. Auger transitions involving 3d electrons have been observed at higher photon energies.

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