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.

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Metadaten
Author:Udo Müller, Theo de Reus, Joachim ReinhardtGND, Berndt MüllerORCiDGND, Walter GreinerGND
URN:urn:nbn:de:hebis:30-29640
URL:http://link.aps.org/abstract/PRA/v37/p1449
Parent Title (German):Physical review A
Document Type:Article
Language:English
Date of Publication (online):2006/07/07
Year of first Publication:1988
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/07/07
Volume:37
Issue:5
Page Number:7
First Page:1449
Last Page:1455
Source:Phys. Rev. A 37, 1449~V1455 (1988), ©1988 The American Physical Society, http://link.aps.org/abstract/PRA/v37/p1449
HeBIS-PPN:187376395
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
PACS-Classification: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.Gb Electronic excitation and ionization of molecules
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 / 34.90.+q Other topics in atomic and molecular collision processes and interactions (restricted to new topics in section 34)
Licence (German):License LogoDeutsches Urheberrecht

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