APPLICATION OF A SINGLE-ACCELERATING TOF METHOD TO COLLISION EXPERIMENTS OF CLUSTER IONS WITH SOLID-SURFACES

A time-of-flight mass spectrometer of a non-Wiley-McLaren type, employ ing a single-acceleration method, was modified for collision experimen t of cluster ions with solid surfaces. The intrinsic peak shape in the collision-induced electron-detachment-yield curve was determined by i mprovement in the energy spread of collided ions. A detailed experimen tal procedure is presented and the electron-detachment process resulti ng from low-energy collision is discussed.