Electron-impact multiple ionization of Baq+ ions ( 1 ≤ q ≤ 13 ) via resonant 3d excitation

H. Knopp, C. Böhme, J. Jacobi, S. Ricz, S. Schippers, A. Müller

Research output: Article

4 Citations (Scopus)

Abstract

One ionization mechanism of barium ions is the resonant excitation of a 3d inner-shell electron with the subsequent decay of the resulting highly excited intermediate state by multiple autoionization processes. We have experimentally studied this process by observing associated resonance structures - in the energy range 700-800 eV - in the multiple (up to sevenfold) ionization cross-sections of Baq+ ions with 1 ≤ q ≤ 13. The 3d-resonance strength is determined quantitatively as a function of initial and final ion charge state. The results suggest a statistical description of multiple ionization via the excitation of inner-shell electrons.

Original languageEnglish
Pages (from-to)433-436
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume205
DOIs
Publication statusPublished - máj. 2003

Fingerprint

electron impact
Ionization
Ions
ionization
ion charge
Electrons
autoionization
ionization cross sections
excitation
barium
ions
electrons
Barium
decay
energy

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces

Cite this

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title = "Electron-impact multiple ionization of Baq+ ions ( 1 ≤ q ≤ 13 ) via resonant 3d excitation",
abstract = "One ionization mechanism of barium ions is the resonant excitation of a 3d inner-shell electron with the subsequent decay of the resulting highly excited intermediate state by multiple autoionization processes. We have experimentally studied this process by observing associated resonance structures - in the energy range 700-800 eV - in the multiple (up to sevenfold) ionization cross-sections of Baq+ ions with 1 ≤ q ≤ 13. The 3d-resonance strength is determined quantitatively as a function of initial and final ion charge state. The results suggest a statistical description of multiple ionization via the excitation of inner-shell electrons.",
keywords = "Crossed beams, Electron-impact ionization, Inner-shell excitation, Multiple ionization",
author = "H. Knopp and C. B{\"o}hme and J. Jacobi and S. Ricz and S. Schippers and A. M{\"u}ller",
year = "2003",
month = "5",
doi = "10.1016/S0168-583X(02)02045-1",
language = "English",
volume = "205",
pages = "433--436",
journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",
issn = "0168-583X",
publisher = "Elsevier",

}

TY - JOUR

T1 - Electron-impact multiple ionization of Baq+ ions ( 1 ≤ q ≤ 13 ) via resonant 3d excitation

AU - Knopp, H.

AU - Böhme, C.

AU - Jacobi, J.

AU - Ricz, S.

AU - Schippers, S.

AU - Müller, A.

PY - 2003/5

Y1 - 2003/5

N2 - One ionization mechanism of barium ions is the resonant excitation of a 3d inner-shell electron with the subsequent decay of the resulting highly excited intermediate state by multiple autoionization processes. We have experimentally studied this process by observing associated resonance structures - in the energy range 700-800 eV - in the multiple (up to sevenfold) ionization cross-sections of Baq+ ions with 1 ≤ q ≤ 13. The 3d-resonance strength is determined quantitatively as a function of initial and final ion charge state. The results suggest a statistical description of multiple ionization via the excitation of inner-shell electrons.

AB - One ionization mechanism of barium ions is the resonant excitation of a 3d inner-shell electron with the subsequent decay of the resulting highly excited intermediate state by multiple autoionization processes. We have experimentally studied this process by observing associated resonance structures - in the energy range 700-800 eV - in the multiple (up to sevenfold) ionization cross-sections of Baq+ ions with 1 ≤ q ≤ 13. The 3d-resonance strength is determined quantitatively as a function of initial and final ion charge state. The results suggest a statistical description of multiple ionization via the excitation of inner-shell electrons.

KW - Crossed beams

KW - Electron-impact ionization

KW - Inner-shell excitation

KW - Multiple ionization

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U2 - 10.1016/S0168-583X(02)02045-1

DO - 10.1016/S0168-583X(02)02045-1

M3 - Article

AN - SCOPUS:0037656387

VL - 205

SP - 433

EP - 436

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

SN - 0168-583X

ER -