Systematic analysis of double-ionization dynamics based on four-body Dalitz plots

D. Fischer; M. Schulz; K. Schneider; M. F. Ciappina; T. Kirchner; A. Kelkar; S. Hagman; M. Grieser; K. U. Kühnel; R. Moshammer; J. Ullrich

doi:10.1103/PhysRevA.80.062703

Systematic analysis of double-ionization dynamics based on four-body Dalitz plots

D. Fischer^*, M. Schulz, K. Schneider, M. F. Ciappina, T. Kirchner, A. Kelkar, S. Hagman, M. Grieser, K. U. Kühnel, R. Moshammer, J. Ullrich

^*Corresponding author for this work

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

12 Scopus citations

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 a broad 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	English
Article number	062703
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	80
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.80.062703
State	Published - 3 Dec 2009
Externally published	Yes

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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 a broad 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.",

author = "D. Fischer and M. Schulz and K. Schneider and Ciappina, {M. F.} and T. Kirchner and A. Kelkar and S. Hagman and M. Grieser and K{\"u}hnel, {K. U.} and R. Moshammer and J. Ullrich",

year = "2009",

month = dec,

day = "3",

doi = "10.1103/PhysRevA.80.062703",

language = "英语",

volume = "80",

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

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T1 - Systematic analysis of double-ionization dynamics based on four-body Dalitz plots

AU - Fischer, D.

AU - Schulz, M.

AU - Schneider, K.

AU - Ciappina, M. F.

AU - Kirchner, T.

AU - Kelkar, A.

AU - Hagman, S.

AU - Grieser, M.

AU - Kühnel, K. U.

AU - Moshammer, R.

AU - Ullrich, J.

PY - 2009/12/3

Y1 - 2009/12/3

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 a broad 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 a broad 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.

UR - http://www.scopus.com/inward/record.url?scp=71449084284&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.80.062703

DO - 10.1103/PhysRevA.80.062703

M3 - 文章

AN - SCOPUS:71449084284

SN - 1050-2947

VL - 80

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

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

IS - 6

M1 - 062703

ER -

Systematic analysis of double-ionization dynamics based on four-body Dalitz plots

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