Symmetric eikonal model for projectile-electron excitation and loss in relativistic ion-atom collisions

Journal Article · Sun Aug 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.022707· OSTI ID:21448504

Voitkiv, A B; Najjari, B ^[1]; Shevelko, V P ^[2]

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1. Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)
2. P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky Avenue 53, 117924 Moscow (Russian Federation)

At impact energies > or approx. 1 GeV/u the projectile-electron excitation and loss occurring in collisions between highly charged ions and neutral atoms is already strongly influenced by the presence of atomic electrons. To treat these processes in collisions with heavy atoms we generalize the symmetric eikonal model, used earlier for considerations of electron transitions in ion-atom collisions within the scope of a three-body Coulomb problem. We show that at asymptotically high collision energies this model leads to an exact transition amplitude and is very well suited to describe the projectile-electron excitation and loss at energies above a few GeV/u. In particular, by considering a number of examples we demonstrate advantages of this model over the first Born approximation at impact energies of {approx}1-30 GeV/u, which are of special interest for atomic physics experiments at the future GSI facilities.

• OSTI ID: 21448504
• Journal Information: Physical Review. A, Vol. 82, Issue 2; Other Information: DOI: 10.1103/PhysRevA.82.022707; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BORN APPROXIMATION
EIKONAL APPROXIMATION
ELECTRONS
EXCITATION
GEV RANGE
ION-ATOM COLLISIONS
LOSSES
MULTICHARGED IONS
RELATIVISTIC RANGE
SYMMETRY
THREE-BODY PROBLEM
TRANSITION AMPLITUDES
AMPLITUDES
APPROXIMATIONS
ATOM COLLISIONS
CALCULATION METHODS
CHARGED PARTICLES
COLLISIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
FERMIONS
ION COLLISIONS
IONS
LEPTONS
MANY-BODY PROBLEM