Phys. Rev. Lett. 83, 1546–1549 (1999)Linear and Circular Dichroism in the Double Photoionization of HeliumReceived 17 November 1998; published in the issue dated 23 August 1999 Energy- and angle-resolved triply differential cross sections have been measured in the double photoionization of helium under equal and unequal energy sharing conditions using right- and left-elliptically polarized photons. Linear dichroism in these cross sections has been observed under the equal energy sharing. For the unequal energy sharing a pure circular polarization effect has been deduced by eliminating the linear polarization contribution. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.1546
DOI:
10.1103/PhysRevLett.83.1546
PACS:
32.80.Fb, 33.55.Ad
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