Abstract
The Coster-Kronig and Auger spectrum of theL 1 shell of gaseous argon has been investigated with an electrostatical spectrometer. The ionization in theL 1 shell of argon was caused by electron impact. Absolute energies and relative intensities of all the Coster-Kronig and Auger transitions have been determined. The relative intensities of transitions within the groupsL 1 L 2, 3 M 1,L 1 L 2, 3 M 2, 3 andL 1 MM agree fairly well with the theoretical values, calculated byRubenstein for extreme Russel-Saunders coupling, if intermediate coupling theory is used properly.
Via the widthγ(L 1) of theL 1 level of argon, found in this experiment to be (1.84±0.2) eV, the following absolute group transition probabilities were determined (in units of 1014 sec−1):W(L1 L 2, 3 M 1)=(5.5±1.0),W(L1 L 2, 3 M 2, 3)=(20.8±2.8),W(L1 MM)=(1.44±0.16). The theoretical values are 21.0, 20.4 and 1.27. The possible reason for the large discrepancy between the experimental and theoretical value ofW(L1 L 2, 3 M 1) is the use of the incorrect value of 287 eV for the binding energyE(L1) byRubenstein. From the energies of theL 1 MM transitions this value has been determined to beE(L1)=(326.5±0.5) eV. This is the first direct measurement ofE(L1) of argon.
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Auszug aus einer Habilitationsschrift, UniversitÄt Münster, 1967. Teilweise vorgetragen auf der Tagung der Deutschen Physikalischen Gesellschaft in Bad Pyrmont am 14.4.1967. Phys. Verhandl.18, 143 (1967).
Herrn Professor Dr. E.Huster danke ich sehr für sein stetes und förderndes Interesse an der Arbeit. Für klÄrende Diskussionen sei ebenfalls Herrn Professor Dr. W. N.Asaad, Herrn Professor Dr. A.Mann und Herrn Dr.Kamphusmann gedankt. Dem Bundesministerium für wissenschaftliche Forschung danke ich für apparative Unterstützung und der Deutschen Forschungsgemeinschaft für die Finanzierung eines Forschungsaufenthaltes in Kairo.
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Mehlhorn, W. Das Coster-Kronig- und Auger-Spektrum derL 1-Schale von Argon. Z. Physik 208, 1–27 (1968). https://doi.org/10.1007/BF01325753
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DOI: https://doi.org/10.1007/BF01325753