How can a neutral atom capture an electron to continuum states?

L. Sarkadi, M. Kuzel, L. Víkor, P. A. Závodszky, R. Maier, D. Berényi, K. O. Groeneveld

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We report on a systematic experimental study of the cusp peak associated with the ionization of the target (known as electron capture to the continuum, ECC) by impact of neutral atoms. In a measurement carried out for He0 on Ar collisions, the dependence of ECC on the impact energy was investigated. The energy was varied between 18.9 and 250 keV/amu. The relative contributions ("fractions") of the different processes (electron capture and loss to the continuum, double electron loss) to the cusp have been determined. For the ECC channel absolute doubly differential cross sections (DDCS) were also measured and compared to the corresponding DDCS values obtained with He+ projectiles at the same experimental conditions. In another experiment an accurate measurement was performed for the shape of the ECC cusp by impact of ground-state and excited (metastable) He projectiles. The aim of this latter experiment was to check the validity of a model based on the formation of a low-lying virtual resonance state of the intermediate e- + He(21S) system. The case of the neutral hydrogen as projectile was also considered: the ECC cusp observed from 100 keV H0 on He collisions is compared with the corresponding ECC cusp obtained with protons.

Original languageEnglish
Pages (from-to)335-341
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume124
Issue number2-3
Publication statusPublished - Apr 1997

Fingerprint

neutral atoms
electron capture
cusps
continuums
Atoms
Electrons
Projectiles
projectiles
collisions
cross sections
Ground state
Ionization
Protons
Hydrogen
Experiments
ionization
ground state
protons
energy
hydrogen

ASJC Scopus subject areas

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

Cite this

How can a neutral atom capture an electron to continuum states? / Sarkadi, L.; Kuzel, M.; Víkor, L.; Závodszky, P. A.; Maier, R.; Berényi, D.; Groeneveld, K. O.

In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 124, No. 2-3, 04.1997, p. 335-341.

Research output: Contribution to journalArticle

Sarkadi, L, Kuzel, M, Víkor, L, Závodszky, PA, Maier, R, Berényi, D & Groeneveld, KO 1997, 'How can a neutral atom capture an electron to continuum states?', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 124, no. 2-3, pp. 335-341.
Sarkadi, L. ; Kuzel, M. ; Víkor, L. ; Závodszky, P. A. ; Maier, R. ; Berényi, D. ; Groeneveld, K. O. / How can a neutral atom capture an electron to continuum states?. In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 1997 ; Vol. 124, No. 2-3. pp. 335-341.
@article{07019a7a178d4739ab43de64327572fb,
title = "How can a neutral atom capture an electron to continuum states?",
abstract = "We report on a systematic experimental study of the cusp peak associated with the ionization of the target (known as electron capture to the continuum, ECC) by impact of neutral atoms. In a measurement carried out for He0 on Ar collisions, the dependence of ECC on the impact energy was investigated. The energy was varied between 18.9 and 250 keV/amu. The relative contributions ({"}fractions{"}) of the different processes (electron capture and loss to the continuum, double electron loss) to the cusp have been determined. For the ECC channel absolute doubly differential cross sections (DDCS) were also measured and compared to the corresponding DDCS values obtained with He+ projectiles at the same experimental conditions. In another experiment an accurate measurement was performed for the shape of the ECC cusp by impact of ground-state and excited (metastable) He projectiles. The aim of this latter experiment was to check the validity of a model based on the formation of a low-lying virtual resonance state of the intermediate e- + He(21S) system. The case of the neutral hydrogen as projectile was also considered: the ECC cusp observed from 100 keV H0 on He collisions is compared with the corresponding ECC cusp obtained with protons.",
author = "L. Sarkadi and M. Kuzel and L. V{\'i}kor and Z{\'a}vodszky, {P. A.} and R. Maier and D. Ber{\'e}nyi and Groeneveld, {K. O.}",
year = "1997",
month = "4",
language = "English",
volume = "124",
pages = "335--341",
journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",
issn = "0168-583X",
publisher = "Elsevier",
number = "2-3",

}

TY - JOUR

T1 - How can a neutral atom capture an electron to continuum states?

AU - Sarkadi, L.

AU - Kuzel, M.

AU - Víkor, L.

AU - Závodszky, P. A.

AU - Maier, R.

AU - Berényi, D.

AU - Groeneveld, K. O.

PY - 1997/4

Y1 - 1997/4

N2 - We report on a systematic experimental study of the cusp peak associated with the ionization of the target (known as electron capture to the continuum, ECC) by impact of neutral atoms. In a measurement carried out for He0 on Ar collisions, the dependence of ECC on the impact energy was investigated. The energy was varied between 18.9 and 250 keV/amu. The relative contributions ("fractions") of the different processes (electron capture and loss to the continuum, double electron loss) to the cusp have been determined. For the ECC channel absolute doubly differential cross sections (DDCS) were also measured and compared to the corresponding DDCS values obtained with He+ projectiles at the same experimental conditions. In another experiment an accurate measurement was performed for the shape of the ECC cusp by impact of ground-state and excited (metastable) He projectiles. The aim of this latter experiment was to check the validity of a model based on the formation of a low-lying virtual resonance state of the intermediate e- + He(21S) system. The case of the neutral hydrogen as projectile was also considered: the ECC cusp observed from 100 keV H0 on He collisions is compared with the corresponding ECC cusp obtained with protons.

AB - We report on a systematic experimental study of the cusp peak associated with the ionization of the target (known as electron capture to the continuum, ECC) by impact of neutral atoms. In a measurement carried out for He0 on Ar collisions, the dependence of ECC on the impact energy was investigated. The energy was varied between 18.9 and 250 keV/amu. The relative contributions ("fractions") of the different processes (electron capture and loss to the continuum, double electron loss) to the cusp have been determined. For the ECC channel absolute doubly differential cross sections (DDCS) were also measured and compared to the corresponding DDCS values obtained with He+ projectiles at the same experimental conditions. In another experiment an accurate measurement was performed for the shape of the ECC cusp by impact of ground-state and excited (metastable) He projectiles. The aim of this latter experiment was to check the validity of a model based on the formation of a low-lying virtual resonance state of the intermediate e- + He(21S) system. The case of the neutral hydrogen as projectile was also considered: the ECC cusp observed from 100 keV H0 on He collisions is compared with the corresponding ECC cusp obtained with protons.

UR - http://www.scopus.com/inward/record.url?scp=0031547398&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031547398&partnerID=8YFLogxK

M3 - Article

VL - 124

SP - 335

EP - 341

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 - 2-3

ER -