Portal de Periódicos da CAPES

Sticking probability of oxygen molecules on single crystals of germanium

1964; Elsevier BV; Volume: 3; Issue: 3 Linguagem: Inglês

10.1016/0021-9517(64)90169-1

1090-2694

James B. Anderson,

Electron and X-Ray Spectroscopy Techniques

The sticking probability α of oxygen molecules in a molecular beam impinging on single-crystal wafers of germanium was determined by a gravimetric technique. The value of α = 0.04 was obtained for surface temperatures between 460 ° and 900 °C and for gas temperatures between 30 ° and 450 °C prior to expansion in generating the molecular beam. Under the conditions of this work, the molecules of oxygen sticking to the surface formed volatile germanium monoxide. It is believed that α represents a steric factor, oxygen molecules being adsorbed only if they lie flat on the surface prior to adsorption.