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Electrical and Computer Engineering

Electrical & Computer Engineering Theses & Dissertations

2005

Radiation

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High Power 121.6 Nm Radiation Source For Advanced Lithography, Jianxun Yan Apr 2005

High Power 121.6 Nm Radiation Source For Advanced Lithography, Jianxun Yan

Electrical & Computer Engineering Theses & Dissertations

A novel high power 121.6 nm radiation source based on dielectric barrier discharge (DBD) has been developed for advanced lithography applications. The discharge unit consists basically of a hollow tube made of a dielectric material with two loop-electrodes wrapped on the outside of the tube. The discharge is generated inside the tube by means of a 13.56 MHz RF power system. The discharge unit is located in a vacuum chamber that provides a dynamic gas flow and windows for radiation transmission.

A very intense and spectrally clean Lyman-α line at 121.6 nm was observed by operating the DBD discharge in …