Transfer excitation in slow collisions between ions of very high charge and two-electron targets

Journal Article · Fri Mar 01 04:00:00 EST 1991 · Physical Review, A; (USA)

DOI:https://doi.org/10.1103/PhysRevA.43.2306· OSTI ID:6045812

Cederquist, H ^[1]

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1. Manne Siegbahn Institute of Physics, S-10405 Stockholm, Sweden (SE)

We argue that a three-step transfer-excitation (capture and target excitation) mechanism enhances (depletes) the cross section for one- (two-) electron removal from a two-electron target. This mechanism, which becomes very important at high projectile charge ({ital q}), is mediated through quasimolecular couplings between diabatic double-capture and transfer-excitation channels, in which the inner of two active electrons is transferred to an excited target state. The inclusion of this process in the extended classical over-barrier model gives excellent agreement with unexplained experimental cross sections for one- and two-electron removal from He in slow collisions with Xe ions of high charge ({ital q}{le}31).

• OSTI ID: 6045812
• Journal Information: Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 43:5; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOMS
CHARGE STATES
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRON TRANSFER
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HELIUM
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
ISOELECTRONIC ATOMS
MULTICHARGED IONS
NONMETALS
RARE GASES
XENON IONS