Issue
EPL
Volume 81, Number 6, March 2008
Article Number 61001
Number of page(s) 4
Section The Physics of Elementary Particles and Fields
DOI http://dx.doi.org/10.1209/0295-5075/81/61001
Published online 20 February 2008
EPL, 81 (2008) 61001
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 March 2008
published online 20 February 2008

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 Weizsäcker and Williams, a simple expression for the bound-free production of e+e- pairs by colliding very-high-energy fully stripped heavy ions is derived for nuclei of arbitrary charge.

PACS
12.20.-m - Quantum electrodynamics.
25.75.-q - Relativistic heavy-ion collisions.
29.20.db - Storage rings and colliders.

© EPLA 2008