Magnetic-quadrupole-electric-dipole mixing in L3 x-ray transitions of heavy elements

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Abstract

The angular distribution of L3 x rays of Th and U ionized by 1.5-MeV protons has been measured and the anisotropy parameters of these lines have been deduced. The ratios of the anisotropy parameters of the different L3 lines were found to disagree with the theoretical predictions. For U, the alignment of the L3 subshell has been determined from the angular distribution of the L±2 line, and from the measured anisotropy of the other L3 x-ray lines the magnetic-quadrupoleelectric-dipole mixing ratios were deduced. The experimental mixing ratios for the ns1/2-2p3/2 transitions are significantly larger than the theoretical values.

Original languageEnglish
Pages (from-to)5452-5456
Number of pages5
JournalPhysical Review A
Volume42
Issue number9
DOIs
Publication statusPublished - 1990

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heavy elements
electric dipoles
quadrupoles
mixing ratios
anisotropy
angular distribution
x rays
magnetic dipoles
alignment
protons
predictions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

Cite this

Magnetic-quadrupole-electric-dipole mixing in L3 x-ray transitions of heavy elements. / Papp, T.; Pálinkás, J.; Sarkadi, L.

In: Physical Review A, Vol. 42, No. 9, 1990, p. 5452-5456.

Research output: Contribution to journalArticle

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AB - The angular distribution of L3 x rays of Th and U ionized by 1.5-MeV protons has been measured and the anisotropy parameters of these lines have been deduced. The ratios of the anisotropy parameters of the different L3 lines were found to disagree with the theoretical predictions. For U, the alignment of the L3 subshell has been determined from the angular distribution of the L±2 line, and from the measured anisotropy of the other L3 x-ray lines the magnetic-quadrupoleelectric-dipole mixing ratios were deduced. The experimental mixing ratios for the ns1/2-2p3/2 transitions are significantly larger than the theoretical values.

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