Electron correlation effects in collisions of slow, highly charged ions with atoms

Conference · Sat Jun 05 04:00:00 EDT 1993 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:6275203

Stolterfoht, N ^[1]; Sommer, K ^[2]; Fremont, F; Husson, X; Lecler, D ^[3]; Swenson, J K; Havener, C C; Meyer, F W ^[4]

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1. Laboratoire de Spectroscopie Atomique, ISMRA, 14050 Caen Cedex (France) Hahn-Meitner-Institut Berlin GmbH, Glienickerstr. 100, D-1000 Berlin 39 (Germany)
2. Hahn-Meitner-Institut Berlin GmbH, Glienickerstr. 100, D-1000 Berlin 39 (Germany)
3. Laboratoire de Spectroscopie Atomique, ISMRA, 14050 Caen Cedex (France)
4. Oak Ridge National Laboratory, Physics Division, Oak Ridge, Tennessee 37831 (United States)

Two-electron processes produced by electron-electron interaction in collisions of slow, highly charged ions with atoms are reviewed. These dielectronic processes are observed as manifestations of dynamic electron correlation in the collision systems 60-keV O[sup 6+]+He and 60-keV C[sup 6+]+He. In particular, the dielectronic process of autoexcitation is shown to create the configurations 2[ell][ital n][ell] [prime] ([ital n][ge]3) of non-equivalent electrons. Instrumental problems due to the detection of low-energy Coster-Kronig electrons in O[sup 6+]+He collisions, can be resolved by measuring K-Auger electrons in the C[sup 6+]+He system. Calculated mean Auger yields are found to deviate significantly from unity in C[sup 6+]+He collisions indicating that stabilization effects are important for that system. Recent measurements of angular distribution of the K-Auger electrons are shown to provided evidence for alignment effects in the state attributed to 2[ell]3[ell] [prime] and 2[ell]4[ell] [prime].

• OSTI ID: 6275203
• Report Number(s): CONF-920948--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 274:1
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOMS
AUGER EFFECT
CARBON IONS
CHARGED PARTICLES
COLLISIONS
CORRELATIONS
ELECTRON CORRELATION
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HELIUM
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
ISOELECTRONIC ATOMS
KEV RANGE
KEV RANGE 10-100
MULTICHARGED IONS
NONMETALS
OXYGEN IONS
RARE GASES