Journal of Vacuum Science & Technology A, Vol.19, No.4, 1481-1484, 2001
Resonances in electron-stimulated desorption of Eu atoms
The electron-stimulated desorption of europium (Eu) atoms has been detected for the first time from Eu layers adsorbed on an oxygen-covered tungsten surface. The dependence of Eu atom yield on electron energy has a pronounced resonance form. As a function of Eu coverage, there appear to be two different types of resonant processes associated with both Eu core excitations and W core excitations.