High resolution photoelectron-Auger-electron coincidence study for the L_23m_23M_23 transitions in argon

S. Ricz, A. Köver, Marko Jurvansuu, D. Varga, J. Molnar, S. Aksela

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

We report a high-resolution coincident experiment between the Ar 2p1/2 and 2p3/2 photoelectrons and subsequently emitted L23-M23M23 Auger electrons, where the 2p 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 2P3/2-(3P012/1D2) intensity ratio in the 2p3/2 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
Pages (from-to)(042707-1) - (042707-7)
JournalPhysical Review A: Atomic, Molecular, and Optical Physics
Volume65
Issue number4
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

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photoelectrons
argon
high resolution
analyzers
electrons
recording
electrostatics
ionization
thresholds
decay
energy

Keywords

  • electron-electron coincidence
  • synchrotron radiation

Cite this

Ricz, S. ; Köver, A. ; Jurvansuu, Marko ; Varga, D. ; Molnar, J. ; Aksela, S. / High resolution photoelectron-Auger-electron coincidence study for the L_23m_23M_23 transitions in argon. In: Physical Review A: Atomic, Molecular, and Optical Physics. 2002 ; Vol. 65, No. 4. pp. (042707-1) - (042707-7).
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abstract = "We report a high-resolution coincident experiment between the Ar 2p1/2 and 2p3/2 photoelectrons and subsequently emitted L23-M23M23 Auger electrons, where the 2p 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 2P3/2-(3P012/1D2) intensity ratio in the 2p3/2 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.",
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High resolution photoelectron-Auger-electron coincidence study for the L_23m_23M_23 transitions in argon. / Ricz, S.; Köver, A.; Jurvansuu, Marko; Varga, D.; Molnar, J.; Aksela, S.

In: Physical Review A: Atomic, Molecular, and Optical Physics, Vol. 65, No. 4, 2002, p. (042707-1) - (042707-7).

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - High resolution photoelectron-Auger-electron coincidence study for the L_23m_23M_23 transitions in argon

AU - Ricz, S.

AU - Köver, A.

AU - Jurvansuu, Marko

AU - Varga, D.

AU - Molnar, J.

AU - Aksela, S.

PY - 2002

Y1 - 2002

N2 - We report a high-resolution coincident experiment between the Ar 2p1/2 and 2p3/2 photoelectrons and subsequently emitted L23-M23M23 Auger electrons, where the 2p 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 2P3/2-(3P012/1D2) intensity ratio in the 2p3/2 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.

AB - We report a high-resolution coincident experiment between the Ar 2p1/2 and 2p3/2 photoelectrons and subsequently emitted L23-M23M23 Auger electrons, where the 2p 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 2P3/2-(3P012/1D2) intensity ratio in the 2p3/2 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.

KW - electron-electron coincidence

KW - synchrotron radiation

U2 - 10.1103/PhysRevA.65.042707

DO - 10.1103/PhysRevA.65.042707

M3 - Article

VL - 65

SP - (042707-1) - (042707-7)

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 4

ER -