Single photon double ionization of Helium at 800 eV _ observation of the Quasi Free Mechanism

28th International Conference on Photonic, Electronic and Atomic Collisions

Schöffler, M.S.^1,2 ; Jahnke, T.^2 ; Waitz, M.^2 ; Trinter, F.^2 ; Lenz, U.^2 ; Stuck, C.^2 ; Jones, M.^3 ; Pindzola, M.S.^3 ; Belkacem, A.^1 ; Cocke, C.L.^4 ; Landers, A.^3 ; Colgan, J.^5 ; Kheifets, A.^6 ; Bray, I.^7 ; Schmidt-Böcking, H.^2 ; Dörner, R.^2 ; Weber, Th^1

Lawrence Berkeley National Lab, Berkeley

CA

94720, United States^1

Institut für Kernphysik, Goethe University Frankfurt, Frankfurt, Germany^2

Auburn University, Auburn

AL

36849, United States^3

Kansas State University, Manhattan

KS

66506, United States^4

Theoretical Division, Los Alamos National Laboratory, Los Alamos

NM

87545, United States^5

Australian National University, Canberra

ACT

0200, Australia^6

Curtin University, Perth

WA

6845, Australia^7

关键词: Complete experiment;    Photo double ionization;    Photon energy;    Single-photon double ionization;    Theoretical calculations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/2/022007/pdf
DOI  :  10.1088/1742-6596/488/2/022007

来源: IOP

【 摘 要 】

In a kinematically complete experiment we have measured the photo double ionization of Helium at a photon energy of 800 eV and observed He2+ions with 0 momentum, corresponding to a back-to-back-emission of the two electrons. The results are in good agreement with theoretical calculations.