(e,3e) on helium at low impact energy: The strongly correlated three-electron continuum

M. Dürr; A. Dorn; J. Ullrich; S. P. Cao; A. Czasch; A. S. Kheifets; J. R. Götz; J. S. Briggs

doi:10.1103/PhysRevLett.98.193201

(e,3e) on helium at low impact energy: The strongly correlated three-electron continuum

M. Dürr^*, A. Dorn, J. Ullrich, S. P. Cao, A. Czasch, A. S. Kheifets, J. R. Götz, J. S. Briggs

^*Corresponding author for this work

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

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Abstract

Double ionization of the helium atom by slow electron impact (E0=106eV) is studied in a kinematically complete experiment. Because of a low excess energy Eexc=27eV above the double ionization threshold, a strongly correlated three-electron continuum is realized. This is demonstrated by measuring and calculating the fully differential cross sections for equal energy sharing of the final-state electrons. While the electron emission is dominated by a strong Coulomb repulsion, also signatures of more complex dynamics of the full four-body system are identified.

Original language	English
Article number	193201
Journal	Physical Review Letters
Volume	98
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.98.193201
Publication status	Published - 11 May 2007

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10.1103/PhysRevLett.98.193201

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abstract = "Double ionization of the helium atom by slow electron impact (E0=106eV) is studied in a kinematically complete experiment. Because of a low excess energy Eexc=27eV above the double ionization threshold, a strongly correlated three-electron continuum is realized. This is demonstrated by measuring and calculating the fully differential cross sections for equal energy sharing of the final-state electrons. While the electron emission is dominated by a strong Coulomb repulsion, also signatures of more complex dynamics of the full four-body system are identified.",

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T1 - (e,3e) on helium at low impact energy

T2 - The strongly correlated three-electron continuum

AU - Dürr, M.

AU - Dorn, A.

AU - Ullrich, J.

AU - Cao, S. P.

AU - Czasch, A.

AU - Kheifets, A. S.

AU - Götz, J. R.

AU - Briggs, J. S.

PY - 2007/5/11

Y1 - 2007/5/11

N2 - Double ionization of the helium atom by slow electron impact (E0=106eV) is studied in a kinematically complete experiment. Because of a low excess energy Eexc=27eV above the double ionization threshold, a strongly correlated three-electron continuum is realized. This is demonstrated by measuring and calculating the fully differential cross sections for equal energy sharing of the final-state electrons. While the electron emission is dominated by a strong Coulomb repulsion, also signatures of more complex dynamics of the full four-body system are identified.

AB - Double ionization of the helium atom by slow electron impact (E0=106eV) is studied in a kinematically complete experiment. Because of a low excess energy Eexc=27eV above the double ionization threshold, a strongly correlated three-electron continuum is realized. This is demonstrated by measuring and calculating the fully differential cross sections for equal energy sharing of the final-state electrons. While the electron emission is dominated by a strong Coulomb repulsion, also signatures of more complex dynamics of the full four-body system are identified.

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U2 - 10.1103/PhysRevLett.98.193201

DO - 10.1103/PhysRevLett.98.193201

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VL - 98

JO - Physical Review Letters

JF - Physical Review Letters

IS - 19

M1 - 193201

ER -

(e,3e) on helium at low impact energy: The strongly correlated three-electron continuum

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