Patent ID: 9632418
Date: 2017-04-25
CPC Classifications: C23C,G03F,H05G

Claim:
1. A method for producing a stream of target material droplets in an extreme ultraviolet (EUV) light source, the method comprising: electrically connecting a metallic coating on an exterior surface of an insulating tube to ground; applying pressure to a target material held in a reservoir that is in fluid communication with the insulating tube; receiving the pressurized target material through a first end of the tube; and passing the target material through an orifice defined by a second end of the tube to produce the stream of droplets, wherein the droplets travel in a vacuum chamber towards a target region configured to receive a laser beam sufficient to convert a target material droplet into a plasma, and a first droplet in the stream and a second droplet in the stream pass through substantially the same spatial location in the target region at different times.