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A: Atomphysik

A 2: Ion Scattering I

A 2.12: Vortrag

Montag, 2. April 2001, 18:30–18:45, H1028

Polarizational Bremsstrahlung In Relativistic Collisions With Heavy Ions — •Andrei Korol^1,2, Oleg Obolensky^3,4, Andrey Solovyov^1,3, and Igor Solovjev² — ¹Institute für Theoretische Physik der Johann Wolfgang Goethe-Universität, 60054 Frankfurt am Main, Germany — ²St.Petersburg State Maritime Technical University, St.Petersburg 198262, Russia — ³A.F. Ioffe Physical-Technical Institute, St. Petersburg 194021, Russia — ⁴University of Pittsburgh, Pittsburgh, PA 15260, USA

Formalism for the full relativistic treatment of the spectral and angular distributions of the bremsstrahlung (BrS) formed in collision of a charged particle with an atom is developed [1]. Both leading mechanisms of the radiation formation, i.e. the ordinary and the polarizational bremsstrahlung, are incorporated into the scheme.

Results of numerical computation of polarizational BrS cross section and angular distributions for relativistic collisions of charged particles (protons, electrons, positrons) with heavy ions are presented. The spectral and angular distributions calculated on the basis of the non-relativistic and relativistic algorithms are compared with each other and with available experimental data [2].

This work is partially supported by RFBR grant 99-02-18294a.

[1] A. V. Korol, O. I. Obolensky, A. V. Solovyov, I. A. Solovjev, submitted to J.Phys.B: At.Mol.Opt.Phys.

[2] S. Portillo, C. A. Quarles, F. D. McDaniel,J. L. Duggan, M. El Bouanani, 21^st ICPEAC, Tu090, Sendai, Japan, 1999