Characterization of ultraintense laser produced fast electron propagation in insulators vs. conductors by optical emission diagnostics M. Manclossi, J.J. Santos, J. Faure, A. Guenmie-Tafo, D. Batani, V. Tikhonchuk, A. Debayle et V. MalkaJ. Phys. IV France, 133 (2006) 499-502DOI: https://doi.org/10.1051/jp4:2006133102