Decay Paths of Interfering Two-Electron Excitations in Helium

Journal Article · Mon Aug 21 04:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.75.1479· OSTI ID:116004

Menzel, A; Frigo, S P; Whitfield, S B; Caldwell, C D ^[1]; Krause, M O ^[2]; Tang, J; Shimamura, I ^[3]

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1. Department of Physics, University of Central Florida, Orlando, Florida 32816-2385 (United States)
2. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6201 (United States)
3. Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-01 (Japan)

Partial photoionization cross sections and photoelectron angular distributions of He in the region of interfering Rydberg series below the {ital n}=5 threshold are measured and compared with theoretical results based on the hyperspherical close-coupling method. At a bandpass of 12 meV for the photon energy, this level of differentiation offers the most critical assessment of the dynamics of the two-electron excitations to date. A good understanding is achieved.

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-84OR21400; AC03-76SF00098
• OSTI ID: 116004
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
CROSS SECTIONS
ELECTRONS
EXCITATION
HELIUM
PHOTOIONIZATION
RYDBERG STATES