PARTICLE PRODUCTION IN SUPERCRITICAL ELECTRIC FIELDS CREATED IN HEAVY ION COLLISIONS K. GEIGER, M. GRABIAK, W. GREINER, B. MÜLLER, J. REINHARDT, S. SCHRAMM and G. SOFF J. Phys. Colloques, 48 C9 (1987) C9-147-C9-155 DOI: 10.1051/jphyscol:1987924