| 摘要 |
A chamber apparatus used with a laser apparatus and a focusing optical system for focusing a laser beam outputted from the laser apparatus may include: a chamber provided with an inlet through which the laser beam is introduced into the chamber; a target supply unit provided to the chamber for supplying a target material to a predetermined region inside the chamber; and a collection unit provided in the chamber for collecting a charged particle generated when the target material is irradiated with the laser beam in the chamber.
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