Photo double ionization of helium 100 eV and 450 eV above threshold: III

doi:10.1088/0953-4075/38/6/003

Photo double ionization of helium 100 eV and 450 eV above threshold: III. Gerade and ungerade amplitudes and their relative phases

A Knapp et al 2005 J. Phys. B: At. Mol. Opt. Phys. 38 645-657 doi: 10.1088/0953-4075/38/6/003

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A Knapp¹, B Krässig², A Kheifets³, I Bray⁴, Th Weber^1,6,7, A L Landers⁵, S Schössler¹, T Jahnke¹, J Nickles¹, S Kammer¹, O Jagutzki¹, L Ph H Schmidt¹, M Schöffler¹, T Osipov^6,7, M H Prior⁷, H Schmidt-Böcking¹, C L Cocke⁶ and R Dörner¹
¹ Institut für Kernphysik, Universität Frankfurt, August-Euler-Str. 6, D-60486 Frankfurt, Germany
² Chemistry Division, Argonne National Laboratory, Argonne, IL 60439, USA
³ Research School of Physical Sciences and Engineering, Australian National University Canberra ACT 0200, Australia
⁴ Centre for Atomic, Molecular and Surface Physics, Murdoch University, Perth, 6150 Australia
⁵ Physics Department, Auburn Univ., Auburn, AL 36849, USA
⁶ Department of Physics, Kansas State University, Manhattan, KS 66506, USA
⁷ Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
E-mail: doerner@atom.uni-frankfurt.de

Abstract. We present a joint experimental and theoretical study of the gerade and ungerade amplitudes of the photo double ionization of helium at excess energies of 100 eV and 450 eV above the threshold. We describe a method of extracting the amplitudes from a COLTRIMS data set. The experimental results are well reproduced by convergent close-coupling (CCC) calculations. The fully differential cross section data underlying this study can be found in our companion papers immediately preceding this one.

Print publication: Issue 6 (28 March 2005)
Received 30 November 2004
Published 7 March 2005

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Photo double ionization of helium 100 eV and 450 eV above threshold: III. Gerade and ungerade amplitudes and their relative phases

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