Double-electron capture and radiative stabilization processes in slow ion-atom collisions

J. Y. Chesnel, F. Frémont, B. Sulik, C. Ruiz-Méndez, H. Merabet, C. Bedouet, X. Husson, M. Grether, N. Stolterfoht

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Mechanisms for double-electron capture producing projectile doubly excited states in O6+ + He and Ne10+ + He collisions are studied. Emphasis is given to slow collisions with projectile energies of a few keV. At these impact energies the production of configurations nln′ l′ of nonequivalent electrons (n′ ≫ n) is dominant. It is shown that the creation of nonequivalent electron states O4+ (1s22pn′ l′) and Ne8+ (3ln′ l′) with n′ ≥ 6 originates from dielectronic processes involving electron-electron interaction. After the collision the populated excited states decay either by Auger electron emission or by radiative (photon) emission. Individual contributions to radiative stabilization of the Ne8+ (nln′ l′) states (n = 3-4) are studied in the impact-energy range from 1-150 keV. The relative importance of the different contributions to stabilization changes significantly with varying collision energy. At 1 keV the major contribution is due to the decay of the configurations 3lnl′ (n ≥ 6) created by collisional dielectronic processes.

Original languageEnglish
Pages (from-to)142-152
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume154
Issue number1-4
DOIs
Publication statusPublished - Jun 3 1999

Fingerprint

Projectiles
Heavy ions
electron capture
Excited states
Stabilization
stabilization
Electron-electron interactions
Atoms
collisions
Electrons
Electron emission
Electron energy levels
atoms
projectiles
ions
Photons
energy
decay
electron states
configurations

ASJC Scopus subject areas

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

Cite this

Double-electron capture and radiative stabilization processes in slow ion-atom collisions. / Chesnel, J. Y.; Frémont, F.; Sulik, B.; Ruiz-Méndez, C.; Merabet, H.; Bedouet, C.; Husson, X.; Grether, M.; Stolterfoht, N.

In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 154, No. 1-4, 03.06.1999, p. 142-152.

Research output: Contribution to journalArticle

Chesnel, J. Y. ; Frémont, F. ; Sulik, B. ; Ruiz-Méndez, C. ; Merabet, H. ; Bedouet, C. ; Husson, X. ; Grether, M. ; Stolterfoht, N. / Double-electron capture and radiative stabilization processes in slow ion-atom collisions. In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 1999 ; Vol. 154, No. 1-4. pp. 142-152.
@article{5a068d4f0f3a46c7a2202afa28f75423,
title = "Double-electron capture and radiative stabilization processes in slow ion-atom collisions",
abstract = "Mechanisms for double-electron capture producing projectile doubly excited states in O6+ + He and Ne10+ + He collisions are studied. Emphasis is given to slow collisions with projectile energies of a few keV. At these impact energies the production of configurations nln′ l′ of nonequivalent electrons (n′ ≫ n) is dominant. It is shown that the creation of nonequivalent electron states O4+ (1s22pn′ l′) and Ne8+ (3ln′ l′) with n′ ≥ 6 originates from dielectronic processes involving electron-electron interaction. After the collision the populated excited states decay either by Auger electron emission or by radiative (photon) emission. Individual contributions to radiative stabilization of the Ne8+ (nln′ l′) states (n = 3-4) are studied in the impact-energy range from 1-150 keV. The relative importance of the different contributions to stabilization changes significantly with varying collision energy. At 1 keV the major contribution is due to the decay of the configurations 3lnl′ (n ≥ 6) created by collisional dielectronic processes.",
author = "Chesnel, {J. Y.} and F. Fr{\'e}mont and B. Sulik and C. Ruiz-M{\'e}ndez and H. Merabet and C. Bedouet and X. Husson and M. Grether and N. Stolterfoht",
year = "1999",
month = "6",
day = "3",
doi = "10.1016/S0168-583X(99)00019-1",
language = "English",
volume = "154",
pages = "142--152",
journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",
issn = "0168-583X",
publisher = "Elsevier",
number = "1-4",

}

TY - JOUR

T1 - Double-electron capture and radiative stabilization processes in slow ion-atom collisions

AU - Chesnel, J. Y.

AU - Frémont, F.

AU - Sulik, B.

AU - Ruiz-Méndez, C.

AU - Merabet, H.

AU - Bedouet, C.

AU - Husson, X.

AU - Grether, M.

AU - Stolterfoht, N.

PY - 1999/6/3

Y1 - 1999/6/3

N2 - Mechanisms for double-electron capture producing projectile doubly excited states in O6+ + He and Ne10+ + He collisions are studied. Emphasis is given to slow collisions with projectile energies of a few keV. At these impact energies the production of configurations nln′ l′ of nonequivalent electrons (n′ ≫ n) is dominant. It is shown that the creation of nonequivalent electron states O4+ (1s22pn′ l′) and Ne8+ (3ln′ l′) with n′ ≥ 6 originates from dielectronic processes involving electron-electron interaction. After the collision the populated excited states decay either by Auger electron emission or by radiative (photon) emission. Individual contributions to radiative stabilization of the Ne8+ (nln′ l′) states (n = 3-4) are studied in the impact-energy range from 1-150 keV. The relative importance of the different contributions to stabilization changes significantly with varying collision energy. At 1 keV the major contribution is due to the decay of the configurations 3lnl′ (n ≥ 6) created by collisional dielectronic processes.

AB - Mechanisms for double-electron capture producing projectile doubly excited states in O6+ + He and Ne10+ + He collisions are studied. Emphasis is given to slow collisions with projectile energies of a few keV. At these impact energies the production of configurations nln′ l′ of nonequivalent electrons (n′ ≫ n) is dominant. It is shown that the creation of nonequivalent electron states O4+ (1s22pn′ l′) and Ne8+ (3ln′ l′) with n′ ≥ 6 originates from dielectronic processes involving electron-electron interaction. After the collision the populated excited states decay either by Auger electron emission or by radiative (photon) emission. Individual contributions to radiative stabilization of the Ne8+ (nln′ l′) states (n = 3-4) are studied in the impact-energy range from 1-150 keV. The relative importance of the different contributions to stabilization changes significantly with varying collision energy. At 1 keV the major contribution is due to the decay of the configurations 3lnl′ (n ≥ 6) created by collisional dielectronic processes.

UR - http://www.scopus.com/inward/record.url?scp=0033519477&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033519477&partnerID=8YFLogxK

U2 - 10.1016/S0168-583X(99)00019-1

DO - 10.1016/S0168-583X(99)00019-1

M3 - Article

VL - 154

SP - 142

EP - 152

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

IS - 1-4

ER -