MATERIAL ANALYSIS AND SURFACE INTERACTION STUDIES USING LASER RESONANT MULTIPHOTON IONIZATION T. GIBERT, P. PEZÉ, B. DUBREUIL, M.F. BARTHE et J.L. DEBRUN J. Phys. IV France, 01 C7 (1991) C7-685-C7-688 DOI: 10.1051/jp4:19917184