PHOTON INDUCED FIELD DESORPTION OF HYDROGEN AND NOBLE GASES FROM TUNGSTEN U. WEIGMANN, St . JAENICKE, R. PITTS, W. DRACHSEL et J.H. BLOCK J. Phys. Colloques, 47 C2 (1986) C2-145-C2-149 DOI: 10.1051/jphyscol:1986221