Convergence of bound-electron--positron pair production calculations for relativistic heavy-ion collisions

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.50.4842· OSTI ID:6817640

Baltz, A J; Rhoades-Brown, M J; Weneser, J ^[1]

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1. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States) Relativistic Heavy-Ion Collider Project, Brookhaven National Laboratory, Upton, New York 11973 (United States)

Large-basis coupled-channel Dirac-equation calculations of bound-electron--positron pair production in relativistic heavy-ion collisions are presented. The relative importance of the enhancement of the coupled-channel calculations over corresponding calculations performed in perturbation theory is shown to decrease with increasing basis size, indicating a systematic reduction of this effect of nonperturbative enhancement with improving convergence of the calculations. The total nonperturbative enhancement of the cross section is shown to be about 7 b for Pb[sup 82+] on Pb[sup 82+] at the Brookhaven Relativistic Heavy-Ion Collider, only some 6% over perturbation theory.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6817640
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 50:6; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
664500 -- Special Atoms & Molecules-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
AUGMENTATION
CHARGED PARTICLES
COLLISIONS
COUPLED CHANNEL THEORY
DIFFERENTIAL EQUATIONS
DIRAC EQUATION
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
FERMIONS
HEAVY IONS
INTERACTIONS
ION COLLISIONS
IONS
LEAD IONS
LEPTONS
MATTER
PAIR PRODUCTION
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE PRODUCTION
PERTURBATION THEORY
POSITRONS
RELATIVISTIC RANGE
WAVE EQUATIONS
YIELDS