High-resolution photoelectron–Auger-electron coincidence study for the [Formula Presented] transitions of argon

S. Ricz, Kövér, M. Jurvansuu, D. Varga, J. Molnár, S. Aksela

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We report a high-resolution coincident experiment between the Ar [Formula Presented] and [Formula Presented] photoelectrons and subsequently emitted [Formula Presented] Auger electrons, where the [Formula Presented] photoelectrons were ionized far above the threshold. We demonstrate the applicability of the coincidence method when separating the different ionization and decay channels even in the case of strongly overlapping peaks. The measurement was carried out with a new high-energy-resolution electrostatic analyzer that is capable of recording the single and coincidence spectra at large range of emission angles simultaneously. An anomalous value was found for the [Formula Presented] intensity ratio in the [Formula Presented] coincidence spectrum, while all the other relative intensities are in good agreement with the previously published data. The possible reasons for the difference are discussed.

Original languageEnglish
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number4
Publication statusPublished - Jan 1 2002


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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