Positron production in crossed beams of bare uranium nuclei
Positron creation in crossed-beam collisions of high-energy, fully stripped heavy ions is investigated within the coupled-channel formalism. In comparison with fixed-target collisions of highly stripped heavy-ion projectiles positron production probabilities are enhanced by more than one order of magnitude. The increase results from the possibility to excite electrons from the negative energy continuum into all bound states. The positron spectrum is shifted towards higher energies because of the absence of electron screening. Rutherford scattering as well as nuclear collisions with time delay are investigated. We also discuss the filling of empty bound states by electrons from pair-production processes.
- Research Organization:
- Institut fuer Theoretische Physik der Johann Wolfgang Goethe-Universitaet Frankfurt, Robert-Mayer-Strasse 8-10, Postfach 111chemically bond932, D-6000 Frankfurt am Main 11, Federal Republic of Germany
- OSTI ID:
- 5344356
- Journal Information:
- Phys. Rev. A; (United States), Vol. 37:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
POSITRONS
PARTICLE PRODUCTION
URANIUM
ION-ION COLLISIONS
COUPLED CHANNEL THEORY
EXPERIMENT PLANNING
MULTICHARGED IONS
NUCLEAR REACTIONS
NUCLEI
QUANTUM ELECTRODYNAMICS
RUTHERFORD SCATTERING
ACTINIDES
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
CHARGED PARTICLES
COLLISIONS
ELASTIC SCATTERING
ELECTRODYNAMICS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FIELD THEORIES
ION COLLISIONS
IONS
LEPTONS
METALS
PLANNING
QUANTUM FIELD THEORY
SCATTERING
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena