Patent ID: 7163161

Claim:
A nozzle for mixing phosphine with a gas, the nozzle comprising: an outer tubular body having an inner wall defining a mixing chamber, and an inlet for providing a laminar stream of phosphine in the form of a thin layer along the inner wall defining the mixing chamber; an inner tubular body disposed concentrically within the outer tubular body and connected to the outer tubular body by a ring-like adapter, the inner tubular body being disposed so that an annular aperture is formed between a portion of an outer wall of the inner tubular body and a portion of the inner wall of the outer tubular body, the annular aperture being less than or equal to 0.2 mm and providing the phosphine an entrance to the mixing chamber, the inner tubular body including an inlet for providing a flow of the gas to the mixing chamber; and a bullet-like air guiding-element disposed concentrically within the inner tubular body so that the portion of the air guiding element having the greatest diameter is disposed in an area of the annular aperture.