L SUBSHELL IONIZATION OF Eu AND Gd BY PROTON, DEUTERON AND ALPHA BOMBARDMENT A.P. JESUS, J.P. RIBEIRO et J.S. LOPES J. Phys. Colloques, 48 C9 (1987) C9-235-C9-238 DOI: 10.1051/jphyscol:1987938