Theoretical multiconfiguration Dirac-Fock method study on the x-ray spectra of multiply ionized heavy atoms: The structure of the K. cap alpha. L/sup n/ lines
Relativistic multiconfiguration Dirac-Fock (MCDF) calculations in the average-level (MCDF-AL) version with the inclusion of the transverse (Breit) interaction, self-energy, and vacuum polarization corrections have been carried out for molybdenum, palladium, lanthanum, and holmium to elucidate the structure of the K..cap alpha..L/sup n/ lines in their x-ray spectra. The examination of the effect of removing electrons from M shell on the principal K..cap alpha..(K..cap alpha..L/sup 0/) lines indicates that the most significant is the effect of removing 3p and then 3s subshells and that the effect of additional holes strongly increases with the atomic number. Detailed calculations have been performed on palladium to shed light on the structure of the K..cap alpha..L/sup n/ satellite lines of its x-ray spectrum, which is the first systematic theoretical study on the structure of these lines of a heavy atom. It has been found that in all cases the ''average'' positions of the groups of lines corresponding to the transitions of the type 1s/sup -1/2p/sup -n/..-->..2p/sup -(n+1)/ obtained in the present work are very close to the recently measured experimental positions of appropriate K..cap alpha..L/sup n/ satellite lines. On the other hand, the structure of the satellite lines has been shown to be much more complex than can be observed experimentally. The results of this work can be used to construct different theoretical K..cap alpha..L/sup n/ spectra for palladium, satisfactorily reproducing the shape of various experimental spectra generated by different inducing projectiles.
- Research Organization:
- Institute of Physics, Nicholas Copernicus University, PL-87-100 Torun-acute-accent, ul. Grudzia-cedilladzka 5, Poland
- OSTI ID:
- 6554965
- Journal Information:
- Phys. Rev. A; (United States), Vol. 39:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HOLMIUM IONS
X-RAY SPECTRA
LANTHANUM IONS
MOLYBDENUM IONS
PALLADIUM IONS
ENERGY-LEVEL TRANSITIONS
FINE STRUCTURE
K SHELL
MULTICHARGED IONS
CHARGED PARTICLES
ELECTRONIC STRUCTURE
IONS
SPECTRA
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory