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EPL, 81 (2008) 61001 www.epljournal.org doi: 10.1209/0295-5075/81/61001

Summary: March 2008
EPL, 81 (2008) 61001 www.epljournal.org
doi: 10.1209/0295-5075/81/61001
Bound-free pair production cross-section in heavy-ion colliders
from the equivalent photon approach
A. Aste
Department of Physics, University of Basel - Klingelbergstrasse 82, 4056 Basel, Switzerland
received 8 November 2007; accepted in final form 22 January 2008
published online 20 February 2008
PACS 12.20.-m ­ Quantum electrodynamics
PACS 25.75.-q ­ Relativistic heavy-ion collisions
PACS 29.20.db ­ Storage rings and colliders
Abstract ­ Exact calculations of the electron-positron pair production by a single photon in the
Coulomb field of a nucleus with simultaneous capture of the electron into the K-shell are discussed
for different nuclear charges. Using the equivalent photon method of Weizs¨acker and Williams, a
simple expression for the bound-free production of e+
pairs by colliding very-high-energy fully
stripped heavy ions is derived for nuclei of arbitrary charge.
Copyright c EPLA, 2008


Source: Aste, Andreas - Institut für Physik, Universität Basel


Collections: Physics