Angular correlations of coincident electron-positron pairs produced in heavy-ion collisions with nuclear time delay

  • We calculate angular correlations between coincident electron-positron pairs emitted in heavy-ion collisions with nuclear time delay. Special attention is directed to a comparison of supercritical and subcritical systems, where angular correlations of pairs produced in collisions of bare U nuclei are found to alter their sign for nuclear delay times of the order of 2 × 10-21 s. This effect is shown to occur exclusively in supercritical systems, where spontaneous positron creation is active.

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Author:Oliver Graf, Joachim ReinhardtGND, Berndt MüllerORCiDGND, Walter GreinerGND, Gerhard SoffGND
Parent Title (German):Physical review letters
Document Type:Article
Date of Publication (online):2006/07/07
Year of first Publication:1988
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/07/07
Page Number:4
First Page:2831
Last Page:2834
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
PACS-Classification:10.00.00 THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (for experimental methods and instrumentation for elementary-particle physics, see section 29) / 12.00.00 Specific theories and interaction models; particle systematics / 12.20.-m Quantum electrodynamics / 12.20.Ds Specific calculations
20.00.00 NUCLEAR PHYSICS / 25.00.00 Nuclear reactions: specific reactions / 25.70.-z Low and intermediate energy heavy-ion reactions
30.00.00 ATOMIC AND MOLECULAR PHYSICS / 34.00.00 Atomic and molecular collision processes and interactions (for atomic, molecular, and ionic collisions in plasma, see 52.20.Hv; for atoms and molecules of astrophysical interest, see 95.30.Dr, Ft; see also 98.38.Bn and 98.58.Bz in interstellar media in as / 34.50.-s Scattering of atoms and molecules / 34.50.Fa Electronic excitation and ionization of atoms (including beam-foil excitation and ionization)
Licence (German):License LogoDeutsches Urheberrecht