Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization

S. Grundmann; F. Trinter; A. W. Bray; S. Eckart; J. Rist; G. Kastirke; D. Metz; S. Klumpp; J. Viefhaus; L. Ph H. Schmidt; J. B. Williams; R. Dörner; T. Jahnke; M. S. Schöffler; A. S. Kheifets

doi:10.1103/PhysRevLett.121.173003

Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization

S. Grundmann, F. Trinter, A. W. Bray, S. Eckart, J. Rist, G. Kastirke, D. Metz, S. Klumpp, J. Viefhaus, L. Ph H. Schmidt, J. B. Williams, R. Dörner, T. Jahnke, M. S. Schöffler, A. S. Kheifets

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21 Citations (Scopus)

Abstract

We report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the angular emission pattern of electrons originating from a pure quadrupole transition. Our fully differential experimental data and companion ab initio nonperturbative theory show the separation of dipole and quadrupole contributions to photo-double-ionization and provide new insight into the nature of the quasifree mechanism.

Original language	English
Article number	173003
Journal	Physical Review Letters
Volume	121
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.121.173003
Publication status	Published - 23 Oct 2018

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10.1103/PhysRevLett.121.173003

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Grundmann, S., Trinter, F., Bray, A. W., Eckart, S., Rist, J., Kastirke, G., Metz, D., Klumpp, S., Viefhaus, J., Schmidt, L. P. H., Williams, J. B., Dörner, R., Jahnke, T., Schöffler, M. S., & Kheifets, A. S. (2018). Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization. Physical Review Letters, 121(17), Article 173003. https://doi.org/10.1103/PhysRevLett.121.173003

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abstract = "We report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the angular emission pattern of electrons originating from a pure quadrupole transition. Our fully differential experimental data and companion ab initio nonperturbative theory show the separation of dipole and quadrupole contributions to photo-double-ionization and provide new insight into the nature of the quasifree mechanism.",

author = "S. Grundmann and F. Trinter and Bray, {A. W.} and S. Eckart and J. Rist and G. Kastirke and D. Metz and S. Klumpp and J. Viefhaus and Schmidt, {L. Ph H.} and Williams, {J. B.} and R. D{\"o}rner and T. Jahnke and Sch{\"o}ffler, {M. S.} and Kheifets, {A. S.}",

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doi = "10.1103/PhysRevLett.121.173003",

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Grundmann, S, Trinter, F, Bray, AW, Eckart, S, Rist, J, Kastirke, G, Metz, D, Klumpp, S, Viefhaus, J, Schmidt, LPH, Williams, JB, Dörner, R, Jahnke, T, Schöffler, MS & Kheifets, AS 2018, 'Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization', Physical Review Letters, vol. 121, no. 17, 173003. https://doi.org/10.1103/PhysRevLett.121.173003

TY - JOUR

T1 - Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization

AU - Grundmann, S.

AU - Trinter, F.

AU - Bray, A. W.

AU - Eckart, S.

AU - Rist, J.

AU - Kastirke, G.

AU - Metz, D.

AU - Klumpp, S.

AU - Viefhaus, J.

AU - Schmidt, L. Ph H.

AU - Williams, J. B.

AU - Dörner, R.

AU - Jahnke, T.

AU - Schöffler, M. S.

AU - Kheifets, A. S.

PY - 2018/10/23

Y1 - 2018/10/23

N2 - We report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the angular emission pattern of electrons originating from a pure quadrupole transition. Our fully differential experimental data and companion ab initio nonperturbative theory show the separation of dipole and quadrupole contributions to photo-double-ionization and provide new insight into the nature of the quasifree mechanism.

AB - We report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the angular emission pattern of electrons originating from a pure quadrupole transition. Our fully differential experimental data and companion ab initio nonperturbative theory show the separation of dipole and quadrupole contributions to photo-double-ionization and provide new insight into the nature of the quasifree mechanism.

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U2 - 10.1103/PhysRevLett.121.173003

DO - 10.1103/PhysRevLett.121.173003

M3 - Article

SN - 0031-9007

VL - 121

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

M1 - 173003

ER -

Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization

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