Abstract

Spectra from several chlorine-containing hydrocarbon molecules excited to x-ray fluorescence have been recorded by a double crystal spectrometer with high resolving power. This study focuses on the region near the occurrence of the transition 1,3 (1s−1 → 3p−1) in chlorine. Whereas the free atom spectrum (from a single vacancy process) consists of an unresolved spin-orbit doublet, e.g., in argon, the molecular spectra often contain several lines. In free atom spectra and in molecular spectra also, there are extra lines or unresolved multiplets (satellites) due to multiple vacancy processes. In this report, these satellite lines are experimentally sorted out of the spectra and the remaining emission peaks associated with possible final state configuration containing a vacancy, i.e., the electronic terms of the molecule.

© 1967 Optical Society of America

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References

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  1. R. E. LaVilla, R. D. Deslattes, J. Chem. Phys. 45, 3442 (1966).
    [CrossRef]
  2. T. Koopmanns, Physica 1, 104 (1933).
    [CrossRef]
  3. R. D. Deslattes, Phys. Rev. 133, A399 (1964).
    [CrossRef]
  4. R. D. Deslattes, B. G. Simson, R. E. LaVilla, Rev. Sci. Instr. 37, 596 (1966).
    [CrossRef]
  5. R. D. Deslattes, B. G. Simson, Rev. Sci. Instr. 37, 753 (1966).
    [CrossRef]
  6. B. L. Henke, E. N. Smith, J. Appl. Phys. 37, 922 (1966).
    [CrossRef]

1966 (4)

R. E. LaVilla, R. D. Deslattes, J. Chem. Phys. 45, 3442 (1966).
[CrossRef]

R. D. Deslattes, B. G. Simson, R. E. LaVilla, Rev. Sci. Instr. 37, 596 (1966).
[CrossRef]

R. D. Deslattes, B. G. Simson, Rev. Sci. Instr. 37, 753 (1966).
[CrossRef]

B. L. Henke, E. N. Smith, J. Appl. Phys. 37, 922 (1966).
[CrossRef]

1964 (1)

R. D. Deslattes, Phys. Rev. 133, A399 (1964).
[CrossRef]

1933 (1)

T. Koopmanns, Physica 1, 104 (1933).
[CrossRef]

Deslattes, R. D.

R. E. LaVilla, R. D. Deslattes, J. Chem. Phys. 45, 3442 (1966).
[CrossRef]

R. D. Deslattes, B. G. Simson, R. E. LaVilla, Rev. Sci. Instr. 37, 596 (1966).
[CrossRef]

R. D. Deslattes, B. G. Simson, Rev. Sci. Instr. 37, 753 (1966).
[CrossRef]

R. D. Deslattes, Phys. Rev. 133, A399 (1964).
[CrossRef]

Henke, B. L.

B. L. Henke, E. N. Smith, J. Appl. Phys. 37, 922 (1966).
[CrossRef]

Koopmanns, T.

T. Koopmanns, Physica 1, 104 (1933).
[CrossRef]

LaVilla, R. E.

R. E. LaVilla, R. D. Deslattes, J. Chem. Phys. 45, 3442 (1966).
[CrossRef]

R. D. Deslattes, B. G. Simson, R. E. LaVilla, Rev. Sci. Instr. 37, 596 (1966).
[CrossRef]

Simson, B. G.

R. D. Deslattes, B. G. Simson, Rev. Sci. Instr. 37, 753 (1966).
[CrossRef]

R. D. Deslattes, B. G. Simson, R. E. LaVilla, Rev. Sci. Instr. 37, 596 (1966).
[CrossRef]

Smith, E. N.

B. L. Henke, E. N. Smith, J. Appl. Phys. 37, 922 (1966).
[CrossRef]

J. Appl. Phys. (1)

B. L. Henke, E. N. Smith, J. Appl. Phys. 37, 922 (1966).
[CrossRef]

J. Chem. Phys. (1)

R. E. LaVilla, R. D. Deslattes, J. Chem. Phys. 45, 3442 (1966).
[CrossRef]

Phys. Rev. (1)

R. D. Deslattes, Phys. Rev. 133, A399 (1964).
[CrossRef]

Physica (1)

T. Koopmanns, Physica 1, 104 (1933).
[CrossRef]

Rev. Sci. Instr. (2)

R. D. Deslattes, B. G. Simson, R. E. LaVilla, Rev. Sci. Instr. 37, 596 (1966).
[CrossRef]

R. D. Deslattes, B. G. Simson, Rev. Sci. Instr. 37, 753 (1966).
[CrossRef]

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Figures (5)

Fig. 1
Fig. 1

An energy level diagram for the process KMMM in atomic argon. Data are from Ref. 3, in which other emission features also appear that cannot be accounted for in terms of this diagram.

Fig. 2
Fig. 2

The vacuum double crystal instrument used for this study. The primary goniometric facility is below and mechanically isolated from the vacuum envelope. The outer wall of the tank carrying the radiation source rotates about the instrument on a ball-bearing seal.

Fig. 3
Fig. 3

Geometry of x-ray source. Primary radiation produced by electron bombardment of the anode (a) entered the secondary source region through window (b). Secondary radiation was viewed by the spectrometer through window (d). Gas flowing through the cell entered at port (c) and left at the similar fitting to the left of (c).

Fig. 4
Fig. 4

Difference spectra for two molecular gases and KCl. The arrows indicate where principal maxima occur in each spectrum. Within the relatively crude statistics, it is seen that these principal maxima are not altered by the change in excitation conditions. The energy zero coincides with the peak of the emission from KCl.

Fig. 5
Fig. 5

A sampling of illustrative molecular spectra from chlorinated hydrocarbons. All spectra are from gas phase systems except (b) which is from a PVC film. For discussion of the expected relationships among (a), (b) and (c), see text. The remaining spectra, (d), (e), (f) are from substituted methanes containing only one chlorine atom. The energy zero is set to coincide with the KCl peak (not shown).

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