Abstract:
PROBLEM TO BE SOLVED: To provide a radiation source that actualizes an output level and a repetition rate suitable for manufacturing. SOLUTION: A radiation source comprises an anode and a cathode that are configured and arranged to create a discharge in a gas or a vapor in a space between the anode and cathode for forming a plasma so as to generate electromagnetic radiation. The gas or vapor may contain xenon, indium, lithium and/or tin. To improve heat dissipation, the radiation source comprises multiple plasma discharge elements, each of which is used only for short intervals. After one discharge element is used, another discharge element is selected. To improve an exact timing of pinch formation and thus that of pulse of EUV radiation, the radiation source comprises a triggering device. To improve conversion efficiency, the radiation source is configured to have a low inductance, and operates in a self-triggering mode. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a radiation source in which an output level and a repeating speed that are suitable for production are realized. SOLUTION: The radiation source comprises an anode 220 and a cathode 210 that are configured and arranged to create a discharge in a gas or vapor in a space between the anode 220 and cathode 210 to form a plasma pinch so as to generate electromagnetic radiation. The gas or vapor may comprise xenon, indium, lithium, and tin. In order to improve heat dissipation, the radiation source LA comprises a plurality of plasma discharge elements 240, each of which is only used for short intervals, after which another discharge element is selected. COPYRIGHT: (C)2004,JPO
Abstract:
A radiation source comprises an anode and a cathode that are configured and arranged to create a discharge in a gas or vapor in a space between anode and cathode and to form a plasma pinch so as to generate electromagnetic radiation. The gas or vapor may comprise xenon, indium, lithium and/or tin. To improve heat dissipation, the radiation source comprises a plurality of discharge elements, each of which is only used for short intervals, after which another discharge element is selected. To improve the exact timing of the pinch formation and thus the pulse of EUV radiation, the radiation source comprises a triggering device. To improve the conversion efficiency, the radiation source is constructed to have a low inductance, and operated in a self-triggering regime.
Abstract:
A device for generating radiation based on a discharge includes a cathode (33k) and an anode (33a). The cathode and anode material are supplied in fluid state. The material forms a plasma pinch when the device is in use. Optionally, nozzles (31) may be used to supply the material. The cathode and/or anode may form a flat surface. The trajectories (33) of the material may be elongated. A laser (37) may be used to cause the discharge more easily. The laser may be directed on the anode or cathode or on a separate material located in between the anode and cathode.
Abstract:
Radiation Source, Lithographic Apparatus, and Device Manufacturing Method. A radiation source comprises an anode and a cathode that are configured and arranged to create a discharge in a gas or vapor in a space between anode and cathode and to form a plasma pinch so as to generate electromagnetic radiation. The gas or vapor may comprise xenon, indium, lithium and/or tin. To improve heat dissipation, the radiation source comprises a plurality of discharge elements, each of which is only used for short intervals, after which another discharge element is selected.To improve the exact timing of the pinch formation and thus the pulse of EUV radiation, the radiation source comprises a triggering device.To improve the conversion efficiency, the radiation source is constructed to have a low inductance, and operated in a self- triggering regime.