Satellite structure in atomic spectra. III. The L X-ray emission spectrum of argon

Dyall, K G; Larkins, F P

doi:10.1088/0022-3700/15/12/006

Cited by 14 publications

(8 citation statements)

References 31 publications

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“…We made Dirac-Fock (DF) calculations for the isoelectronic sequence Cl-, argon and K'. Our values for argon are nearly the same as the ones Dyall and Larkins (1982) obtained with HF. Using these results the location of the double-ionisation satellites in C1-and K+ can be estimated since the effect of the configuration interaction is probably about the same as in argon.…”

Section: The Lq Line and The Double-ionisation Satellitessupporting

confidence: 87%

“…They may be interpreted to be the 2p-'3p-'-3s-'3p-' double-ionisation satellites, found previously in argon (Nordgren et a1 1979). Dyall and Larkins (1982) calculated the energies of these transitions using both Hartree-Fock (HF) and CI methods. The HF values differed several electron volts from the experimental energies, but the CI calculations gave good results.…”

Section: The Lq Line and The Double-ionisation Satellitesmentioning

confidence: 99%

“…In the L2.3 spectrum of argon the interaction between the 3s-I ' S and the 3p-'nl 2S states leads to transitions below the 2p-' 2P,,z,312-3s-1 2S112, L,, v , transition (Cooper and LaVilla 1970, Nordgren et a1 1979, Martin er al 1978, Dyall and Larkins 1982. Cooper and LaVilla suggested that similar transitions would give rise to emissions on the low-energy side of the C1-L,,,, and K+ L , , q lines in KCl.…”

Section: Introductionmentioning

confidence: 97%

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Structure and Properties of Networks in Heat-resistant Polymers

Askadskii¹,

Kochergin²

1980

Russ. Chem. Rev.

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High resolution K-L2.3 x-ray spectra from KF, KCI, KBr and KI have been measured with a 6 m grating spectrometer using electron excitation. Low-energy emission structures of the L , , q lines are observed for all compounds. Evidence is presented that these structures are mainly due to the discrete 3s13p6-3s23pJn[ ( n = 3 , 4 ) final-state configuration interaction instead of the continuum 3s13p6-3s23p4cI configuration interaction found previously for Cl-. The threshold energies, calculated using the localised-hole point-ion (LHPI) model with a continuum phonon correction, are found to be consistent with this interpretation. The 2p-'3p-'-3s-'3p-' double-ionisation satellites are found to be anomalously weak in comparison with argon and Cl-. The large widths of the L, and L,,lines are attributed to 3s-'-V2 super-Coster-Kronig transitions, which are not allowed in the free ion.

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Section: The Lq Line and The Double-ionisation Satellitessupporting

confidence: 87%

Section: The Lq Line and The Double-ionisation Satellitesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Structure and Properties of Networks in Heat-resistant Polymers

Askadskii¹,

Kochergin²

1980

Russ. Chem. Rev.

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“…A wide range of initial, multiply excited and final state satellites are in principle possible as we have discussed in the case of the L xray emission spectrum for argon. 31 It is evident from the argon study that many of the correlation satellites may have transition energies within the energy range spanned by the diagram lines. This problem may be even more severe for molecules where there is a greater spread of valence orbital energies due to molecular symmetry effects.…”

Section: L 23 Emission Diagram Linesmentioning

confidence: 99%

“…2) is most probably due to final state correlation satellites, since these lines are the most intense in related atomic studies. 31 These may include dipole shake-up as well as monopole shake-up, in the atomic sense, 31 although the latter processes are of lesser importance. An alternative description is to refer to such effects as radiative Auger processes.…”

Section: L 23 Emission Diagram Linesmentioning

confidence: 99%

An a b i n i t i o study of the chlorine x-ray emission spectra of the CH3Cl molecule

Larkins

Phillips

1988

The Journal of Chemical Physics

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The x-ray emission processes associated with K, L 1 , and L 2 , 3 chlorine core shell ionization in the CH 3 Cl molecule have been studied using ab initio molecular orbital methods. The energy and absolute transition rates of XES processes have been calculated. Comparison with atomic calculations is used to identify weak molecular effects. For the K(J spectrum relaxation terms must be included to obtain good agreement between the calculated and experimental spectra. It is concluded that three transitions are major contributors to the K(J spectrum. However, a onecenter model is adequate to account for the Ka spectrum. Uncertainty regarding the extent of satellite contribution to the experimental L 2 , 3 spectrum and the breakdown of the single particle model has made direct comparison between theory and experiment difficult. New measurements and a more refined theoretical approach b~yond the relaxed Hartree-Fock model are desirable. The L 2 , 3 and L 1 or K(J emission spectra provide complementary information for probing the valence electronic structure of the CH 3 Cl molecule.

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Importance of Intra- and Inter-Atomic Contributions to Molecular X-Ray Emission Processes

Larkins

1988

X-Ray Spectroscopy in Atomic and Solid State Physics

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Satellite structure in atomic spectra. III. The L X-ray emission spectrum of argon

Cited by 14 publications

References 31 publications

Structure and Properties of Networks in Heat-resistant Polymers

Structure and Properties of Networks in Heat-resistant Polymers

An a b i n i t i o study of the chlorine x-ray emission spectra of the CH3Cl molecule

Importance of Intra- and Inter-Atomic Contributions to Molecular X-Ray Emission Processes

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