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The heavy ion probability for continuum e+ e- pair production has beencalculated to all orders in Z alpha as a function of impact parameter. Theformula resulting from an exact solution of the semiclassical Dirac equation inthe ultrarelativistic limit is evaluated numerically. In a calculation of gamma= 100 colliding Au ions the probability of e+ e- pair production is reducedfrom the perturbation theory result throughout the impact parameter range.Comment: 20 pages, latex, revtex, 6 eps figures. Revised Phys. Rev. C version  with minor additions, one figure added, and added reference

physical review. c. nuclear physics/physical review. c, nuclear physics

Impact parameter dependence of heavy ion<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>e</mml:mi><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>pair production to all orders in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>Z</mml:mi><mml:mi>α</mml:mi></mml:mrow></mml:math>

Impact parameter dependence of heavy ione+e−pair production to all orders inZα