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Intensity oscillations in the carbon 1s ionization cross sections of 2-butyne Public Deposited

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Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. This is the publisher’s final pdf. The published article is copyrighted by American Physical Society and can be found at:  http://www.aps.org/.

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  • Carbon 1s photoelectron spectra for 2-butyne (CH3C CCH3) measured in the photon energy range from threshold to 150 eV above threshold show oscillations in the intensity ratio C2,3/C1,4. Similar oscillations have been seen in chloroethanes, where the effect has been attributed to EXAFS-type scattering from the substituent chlorine atoms. In 2-butyne, however, there is no high-Z atom to provide a scattering center and, hence, oscillations of the magnitude observed are surprising. The results have been analyzed in terms of two different theoretical models: a density-functional model with B-spline atom-centered functions to represent the continuum electrons and a multiple-scattering model using muffin-tin potentials to represent the scattering centers. Both methods give a reasonable description of the energy dependence of the intensity ratios. (C) 2013 AIP Publishing LLC.
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  • Carroll, T., Thomas, T., Zahl, M., Borve, K., Saethre, L., Decleva, P., . . . Rehr, J. (2013). Intensity oscillations in the carbon 1s ionization cross sections of 2-butyne. Journal of Chemical Physics, 138(23) doi:10.1063/1.4810870
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  • 138
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  • 23
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  • Thiswork has been supported by the U.S. Department of EnergyBasic Energy Sciences Grant No. DE-FG03-97ER45623(J.J.R., J.J.K., and F.D.V.).
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  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2013-09-24T20:28:59Z No. of bitstreams: 1 ThomasTDarrahChemistryIntensityOscillationsCarbon.pdf: 258121 bytes, checksum: 82b9b34e18af1a8e96d9bd8b6f10612d (MD5)
  • description.provenance : Made available in DSpace on 2013-09-24T20:29:28Z (GMT). No. of bitstreams: 1 ThomasTDarrahChemistryIntensityOscillationsCarbon.pdf: 258121 bytes, checksum: 82b9b34e18af1a8e96d9bd8b6f10612d (MD5) Previous issue date: 2013-06-21
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-09-24T20:29:28Z (GMT) No. of bitstreams: 1 ThomasTDarrahChemistryIntensityOscillationsCarbon.pdf: 258121 bytes, checksum: 82b9b34e18af1a8e96d9bd8b6f10612d (MD5)

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