Advanced

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)
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
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
2007-11-08 09:06:43
date last changed
2017-12-10 04:25:57
@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},
  volume       = {35},
  year         = {2002},
}