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Correlative multielectron processes in K-shell photoionization of Ca, Ti and V in the energy range of 8-35 keV

Oura, M ; Yamaoka, H ; Kawatsura, K ; Takahiro, K ; Takeshima, N ; Zou, YM ; Hutton, Roger LU ; Ito, S ; Awaya, Y and Terasawa, M , et al. (2002) In Journal of Physics B: Atomic, Molecular and Optical Physics 35(18). p.3847-3863
Abstract
The Kalpha satellite spectra arising from the correlative multielectron processes accompanying K-shell photoionization of Ca, Ti and V were measured using a broad range crystal spectrometer. Multiconfiguration Dirac-Fock calculations were performed to interpret the observed,x-ray energies and the spectral line shape., The calculations agree fairly well with the experimental results. The variation of the KalphaL(1) satellite and the Kalpha(1,2)(h) hypersatellite intensities was measured as a function, of excitation energy in the range of 8-35 keV. The KalphaL(1)/Kalpha(1,2) intensity ratio for each,element is already saturated in our energy range, and the asymptotic values of 1.58 +/- 0.08, 1.26 +/- 0.06 and 0.97 +/- 0.05% for Ca, Ti. and V... (More)
The Kalpha satellite spectra arising from the correlative multielectron processes accompanying K-shell photoionization of Ca, Ti and V were measured using a broad range crystal spectrometer. Multiconfiguration Dirac-Fock calculations were performed to interpret the observed,x-ray energies and the spectral line shape., The calculations agree fairly well with the experimental results. The variation of the KalphaL(1) satellite and the Kalpha(1,2)(h) hypersatellite intensities was measured as a function, of excitation energy in the range of 8-35 keV. The KalphaL(1)/Kalpha(1,2) intensity ratio for each,element is already saturated in our energy range, and the asymptotic values of 1.58 +/- 0.08, 1.26 +/- 0.06 and 0.97 +/- 0.05% for Ca, Ti. and V were determined. By combining the present results and the previously measured values for various elements, we have found a Z(-3.5) scaling law for the KalphaL(1)/Kalpha(1,2) intensity ratio, The measured Kalpha(1,2)(h)/Kalpha(1,2) for each element, is found to increase smoothly from its onset and shows a long saturation range extending up to at least 25 keV above the threshold for Ti. The evolution of the Kalpha(1,2)(h)/Kalpha(1,2) intensity ratio is compared with the analytic Thomas model and with the theoretical calculation based on the screened hydrogenic model. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics B: Atomic, Molecular and Optical Physics
volume
35
issue
18
pages
3847 - 3863
publisher
IOP Publishing
external identifiers
  • wos:000178714500007
  • scopus:0037190591
ISSN
0953-4075
DOI
10.1088/0953-4075/35/18/305
language
English
LU publication?
yes
id
7abf6d20-eef1-47ec-98e2-1b073b2caca4 (old id 324924)
date added to LUP
2016-04-01 15:31:35
date last changed
2024-01-10 16:19:42
@article{7abf6d20-eef1-47ec-98e2-1b073b2caca4,
  abstract     = {{The Kalpha satellite spectra arising from the correlative multielectron processes accompanying K-shell photoionization of Ca, Ti and V were measured using a broad range crystal spectrometer. Multiconfiguration Dirac-Fock calculations were performed to interpret the observed,x-ray energies and the spectral line shape., The calculations agree fairly well with the experimental results. The variation of the KalphaL(1) satellite and the Kalpha(1,2)(h) hypersatellite intensities was measured as a function, of excitation energy in the range of 8-35 keV. The KalphaL(1)/Kalpha(1,2) intensity ratio for each,element is already saturated in our energy range, and the asymptotic values of 1.58 +/- 0.08, 1.26 +/- 0.06 and 0.97 +/- 0.05% for Ca, Ti. and V were determined. By combining the present results and the previously measured values for various elements, we have found a Z(-3.5) scaling law for the KalphaL(1)/Kalpha(1,2) intensity ratio, The measured Kalpha(1,2)(h)/Kalpha(1,2) for each element, is found to increase smoothly from its onset and shows a long saturation range extending up to at least 25 keV above the threshold for Ti. The evolution of the Kalpha(1,2)(h)/Kalpha(1,2) intensity ratio is compared with the analytic Thomas model and with the theoretical calculation based on the screened hydrogenic model.}},
  author       = {{Oura, M and Yamaoka, H and Kawatsura, K and Takahiro, K and Takeshima, N and Zou, YM and Hutton, Roger and Ito, S and Awaya, Y and Terasawa, M and Sekioka, T and Mukoyama, T}},
  issn         = {{0953-4075}},
  language     = {{eng}},
  number       = {{18}},
  pages        = {{3847--3863}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Physics B: Atomic, Molecular and Optical Physics}},
  title        = {{Correlative multielectron processes in K-shell photoionization of Ca, Ti and V in the energy range of 8-35 keV}},
  url          = {{http://dx.doi.org/10.1088/0953-4075/35/18/305}},
  doi          = {{10.1088/0953-4075/35/18/305}},
  volume       = {{35}},
  year         = {{2002}},
}