Systematic Analysis of Double-Ionization Dynamics Based on Four-Body Dalitz Plots

Daniel Fischer; Michael Schulz; Katharina R. Schneider; Marcelo F. Ciappina; Tom Kirchner; Aditya H. Kelkar; S. Hagman; Manfred Grieser; Kai Uwe Kuhnel; Robert Moshammer; Joachim Hermann Ullrich

doi:10.1103/PhysRevA.80.062703

Systematic Analysis of Double-Ionization Dynamics Based on Four-Body Dalitz Plots

Daniel Fischer
, Michael Schulz
, Katharina R. Schneider
, Marcelo F. Ciappina
, Tom Kirchner
, Aditya H. Kelkar
, S. Hagman
, Manfred Grieser
, Kai Uwe Kuhnel
, Robert Moshammer
, Joachim Hermann Ullrich

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We report on an experimental and theoretical systematic study of double ionization of helium by ion impact in terms of four-particle Dalitz plots. Several collision systems covering abroad range of perturbation parameters η (projectile charge to speed ratio) were investigated. With increasing η we observe a systematic trend from features, characteristic to correlated double-ionization mechanisms, to signatures of higher-order processes not requiring electron-electron correlations [the mechanism called "two-step-two projectile-electron interaction" (TS-2)]. The data for the largest η can qualitatively be amazingly well described by a simple model only including the TS-2 mechanism.

Original language	American English
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	80
DOIs	https://doi.org/10.1103/PhysRevA.80.062703
State	Published - Dec 1 2009

Keywords

Collision Systems
Double Ionization
Double-ionization Dynamics
Electron Interaction
Electron-electron Correlation
Higher-order Process
Ion Impact
Ionization Mechanisms
Perturbation Parameters
Projectile Charge
Simple Model
Speed Ratio
Systematic Analysis
Systematic Study
Helium
Ion Bombardment
Particle Detectors

Disciplines

Physics

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Systematic Analysis of Double-Ionization Dynamics Based on Four-BFinal published version, 758 KBLicense: CC BY

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@article{1f83f9d6ee814038b9aab0ba10bd7ee0,

title = "Systematic Analysis of Double-Ionization Dynamics Based on Four-Body Dalitz Plots",

abstract = " We report on an experimental and theoretical systematic study of double ionization of helium by ion impact in terms of four-particle Dalitz plots. Several collision systems covering abroad range of perturbation parameters η (projectile charge to speed ratio) were investigated. With increasing η we observe a systematic trend from features, characteristic to correlated double-ionization mechanisms, to signatures of higher-order processes not requiring electron-electron correlations [the mechanism called {"}two-step-two projectile-electron interaction{"} (TS-2)]. The data for the largest η can qualitatively be amazingly well described by a simple model only including the TS-2 mechanism.",

keywords = "Collision Systems, Double Ionization, Double-ionization Dynamics, Electron Interaction, Electron-electron Correlation, Higher-order Process, Ion Impact, Ionization Mechanisms, Perturbation Parameters, Projectile Charge, Simple Model, Speed Ratio, Systematic Analysis, Systematic Study, Helium, Ion Bombardment, Particle Detectors",

author = "Daniel Fischer and Michael Schulz and Schneider, \{Katharina R.\} and Ciappina, \{Marcelo F.\} and Tom Kirchner and Kelkar, \{Aditya H.\} and S. Hagman and Manfred Grieser and Kuhnel, \{Kai Uwe\} and Robert Moshammer and Ullrich, \{Joachim Hermann\}",

year = "2009",

month = dec,

day = "1",

doi = "10.1103/PhysRevA.80.062703",

language = "American English",

volume = "80",

journal = "Physical Review A - Atomic, Molecular, and Optical Physics",

issn = "1094-1622",

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TY - JOUR

T1 - Systematic Analysis of Double-Ionization Dynamics Based on Four-Body Dalitz Plots

AU - Fischer, Daniel

AU - Schulz, Michael

AU - Schneider, Katharina R.

AU - Ciappina, Marcelo F.

AU - Kirchner, Tom

AU - Kelkar, Aditya H.

AU - Hagman, S.

AU - Grieser, Manfred

AU - Kuhnel, Kai Uwe

AU - Moshammer, Robert

AU - Ullrich, Joachim Hermann

PY - 2009/12/1

Y1 - 2009/12/1

N2 - We report on an experimental and theoretical systematic study of double ionization of helium by ion impact in terms of four-particle Dalitz plots. Several collision systems covering abroad range of perturbation parameters η (projectile charge to speed ratio) were investigated. With increasing η we observe a systematic trend from features, characteristic to correlated double-ionization mechanisms, to signatures of higher-order processes not requiring electron-electron correlations [the mechanism called "two-step-two projectile-electron interaction" (TS-2)]. The data for the largest η can qualitatively be amazingly well described by a simple model only including the TS-2 mechanism.

AB - We report on an experimental and theoretical systematic study of double ionization of helium by ion impact in terms of four-particle Dalitz plots. Several collision systems covering abroad range of perturbation parameters η (projectile charge to speed ratio) were investigated. With increasing η we observe a systematic trend from features, characteristic to correlated double-ionization mechanisms, to signatures of higher-order processes not requiring electron-electron correlations [the mechanism called "two-step-two projectile-electron interaction" (TS-2)]. The data for the largest η can qualitatively be amazingly well described by a simple model only including the TS-2 mechanism.

KW - Collision Systems

KW - Double Ionization

KW - Double-ionization Dynamics

KW - Electron Interaction

KW - Electron-electron Correlation

KW - Higher-order Process

KW - Ion Impact

KW - Ionization Mechanisms

KW - Perturbation Parameters

KW - Projectile Charge

KW - Simple Model

KW - Speed Ratio

KW - Systematic Analysis

KW - Systematic Study

KW - Helium

KW - Ion Bombardment

KW - Particle Detectors

UR - https://scholarsmine.mst.edu/phys_facwork/793

U2 - 10.1103/PhysRevA.80.062703

DO - 10.1103/PhysRevA.80.062703

M3 - Article

SN - 1094-1622

VL - 80

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

ER -

Systematic Analysis of Double-Ionization Dynamics Based on Four-Body Dalitz Plots

Abstract

Keywords

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