Helicity Dependence of the Photon-Induced Three-Body Coulomb Fragmentation of Helium Investigated by Cold Target Recoil Ion Momentum Spectroscopy

Journal Article · Mon Jun 01 04:00:00 EDT 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.5301· OSTI ID:636189

Mergel, V; Achler, M; Doerner, R; Khayyat, K; Spielberger, L; McGuire, J H; Schmidt-Boecking, H ^[1]; Achler, M; Kambara, T; Awaya, Y; Zoran, V; Nystroem, B ^[2]; McGuire, J H ^[3]; Feagin, J ^[4]; Berakdar, J ^[5]; Azuma, Y ^[6]

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1. Institut fuer Kernphysik der Universitaet Frankfurt, August-Euler-Strasse 6, D-60486 Frankfurt (Germany)
2. The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, 351-01 (Japan)
3. Tulane University, New Orleans, Louisiana 70118 (United States)
4. California State University, Fullerton, California 92834 (United States)
5. Max-Planck Institute for Microstructure Physics, Weinberg 2, D-06120 Halle (Germany)
6. Photon Factory, IMSS, KEK, Tsukuba, Ibaraki, 305 (Japan)

The angular and energy dependence of circular dichroism in photo-double-ionization of helium at a photon energy of 99thinspeV is investigated. Using cold target recoil ion momentum spectroscopy the absolute fivefold differential cross section has been obtained by a coincident measurement of the vector momenta of one electron and the recoiling He{sup 2+} ion covering all relative azimuthal and polar angles. The experimental results are contrasted with numerical calculations using different helium ground state wave functions and forms of the dipole operator. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 636189
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 24 Vol. 80; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DIPOLES
ELECTRONS
ENERGY DEPENDENCE
EV RANGE 10-100
FRAGMENTATION
GROUND STATES
HELICITY
HELIUM
MAGNETIC CIRCULAR DICHROISM
PHOTOIONIZATION
SPECTROSCOPY
WAVE FUNCTIONS