Double-autoionization decay of resonantly excited single-electron states

M. Ya Amusia, V. A. Kilin, A. Ehresmann, H. Schmoranzer, K. H. Schartner

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Perturbation theory in the lowest non-vanishing order in interelectron interaction has been applied to the theoretical investigation of double-ionization decays of resonantly excited single-electron states. The formulae for the transition probabilities were derived in the LS coupling scheme, and the orbital angular momentum and spin selection rules were obtained. In addition to the formulae, which are exact in this order, three approximate expressions, which correspond to illustrative model mechanisms of the transition, were derived as limiting cases of the exact ones. Numerical results were obtained for the decay of the resonantly excited Kr I 3d -15p( 1P) state which demonstrated quite clearly the important role of the interelectron interaction in double-ionization processes. On the other hand, the results obtained show that low-energy electrons can appear in the photoelectron spectrum below the ionisation threshold of the 3d shell. As a function of the photon frequency, the yield of these low-energy electrons is strongly amplified by the resonant transition of the 3d electron to 5p (or to other discrete levels), acting as an intermediate state, when the photon frequency approaches that of the transition.

Original languageEnglish
Pages (from-to)1281-1300
Number of pages20
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume26
Issue number7
DOIs
Publication statusPublished - 14 Apr 1993

Fingerprint

autoionization
electron states
ionization
decay
electron energy
photons
transition probabilities
photoelectrons
angular momentum
perturbation theory
interactions
orbitals
thresholds
electrons

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

Cite this

Double-autoionization decay of resonantly excited single-electron states. / Amusia, M. Ya; Kilin, V. A.; Ehresmann, A.; Schmoranzer, H.; Schartner, K. H.

In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 26, No. 7, 14.04.1993, p. 1281-1300.

Research output: Contribution to journalArticle

Amusia, M. Ya ; Kilin, V. A. ; Ehresmann, A. ; Schmoranzer, H. ; Schartner, K. H. / Double-autoionization decay of resonantly excited single-electron states. In: Journal of Physics B: Atomic, Molecular and Optical Physics. 1993 ; Vol. 26, No. 7. pp. 1281-1300.
@article{278a8435fd1e41fbbdcf3860aec1a799,
title = "Double-autoionization decay of resonantly excited single-electron states",
abstract = "Perturbation theory in the lowest non-vanishing order in interelectron interaction has been applied to the theoretical investigation of double-ionization decays of resonantly excited single-electron states. The formulae for the transition probabilities were derived in the LS coupling scheme, and the orbital angular momentum and spin selection rules were obtained. In addition to the formulae, which are exact in this order, three approximate expressions, which correspond to illustrative model mechanisms of the transition, were derived as limiting cases of the exact ones. Numerical results were obtained for the decay of the resonantly excited Kr I 3d -15p( 1P) state which demonstrated quite clearly the important role of the interelectron interaction in double-ionization processes. On the other hand, the results obtained show that low-energy electrons can appear in the photoelectron spectrum below the ionisation threshold of the 3d shell. As a function of the photon frequency, the yield of these low-energy electrons is strongly amplified by the resonant transition of the 3d electron to 5p (or to other discrete levels), acting as an intermediate state, when the photon frequency approaches that of the transition.",
author = "Amusia, {M. Ya} and Kilin, {V. A.} and A. Ehresmann and H. Schmoranzer and Schartner, {K. H.}",
year = "1993",
month = "4",
day = "14",
doi = "10.1088/0953-4075/26/7/012",
language = "English",
volume = "26",
pages = "1281--1300",
journal = "Journal of Physics B: Atomic, Molecular and Optical Physics",
issn = "0953-4075",
publisher = "IOP Publishing Ltd.",
number = "7",

}

TY - JOUR

T1 - Double-autoionization decay of resonantly excited single-electron states

AU - Amusia, M. Ya

AU - Kilin, V. A.

AU - Ehresmann, A.

AU - Schmoranzer, H.

AU - Schartner, K. H.

PY - 1993/4/14

Y1 - 1993/4/14

N2 - Perturbation theory in the lowest non-vanishing order in interelectron interaction has been applied to the theoretical investigation of double-ionization decays of resonantly excited single-electron states. The formulae for the transition probabilities were derived in the LS coupling scheme, and the orbital angular momentum and spin selection rules were obtained. In addition to the formulae, which are exact in this order, three approximate expressions, which correspond to illustrative model mechanisms of the transition, were derived as limiting cases of the exact ones. Numerical results were obtained for the decay of the resonantly excited Kr I 3d -15p( 1P) state which demonstrated quite clearly the important role of the interelectron interaction in double-ionization processes. On the other hand, the results obtained show that low-energy electrons can appear in the photoelectron spectrum below the ionisation threshold of the 3d shell. As a function of the photon frequency, the yield of these low-energy electrons is strongly amplified by the resonant transition of the 3d electron to 5p (or to other discrete levels), acting as an intermediate state, when the photon frequency approaches that of the transition.

AB - Perturbation theory in the lowest non-vanishing order in interelectron interaction has been applied to the theoretical investigation of double-ionization decays of resonantly excited single-electron states. The formulae for the transition probabilities were derived in the LS coupling scheme, and the orbital angular momentum and spin selection rules were obtained. In addition to the formulae, which are exact in this order, three approximate expressions, which correspond to illustrative model mechanisms of the transition, were derived as limiting cases of the exact ones. Numerical results were obtained for the decay of the resonantly excited Kr I 3d -15p( 1P) state which demonstrated quite clearly the important role of the interelectron interaction in double-ionization processes. On the other hand, the results obtained show that low-energy electrons can appear in the photoelectron spectrum below the ionisation threshold of the 3d shell. As a function of the photon frequency, the yield of these low-energy electrons is strongly amplified by the resonant transition of the 3d electron to 5p (or to other discrete levels), acting as an intermediate state, when the photon frequency approaches that of the transition.

UR - http://www.scopus.com/inward/record.url?scp=8444224057&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=8444224057&partnerID=8YFLogxK

U2 - 10.1088/0953-4075/26/7/012

DO - 10.1088/0953-4075/26/7/012

M3 - Article

VL - 26

SP - 1281

EP - 1300

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

SN - 0953-4075

IS - 7

ER -