The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2018
Filed:
Jun. 28, 2017
Hitachi High-tech Science Corporation, Tokyo, JP;
Hitachi High-Tech Science Corporation, Tokyo, JP;
Abstract
Provided is an ion beam system including a gas field ionization ion source which can obtain a high current sufficient for processing and stabilize an ion beam current. The ion beam system includes a gas field ionization ion source which includes: a vacuum vessel; an emitter tip holder disposed in the vacuum vessel; an emitter tip connected to the emitter tip holder; an extraction electrode opposed to the emitter tip; a gas supply portion for supplying a gas to the emitter tip; and a cold transfer member disposed in the vacuum vessel and transferring cold energy to the emitter tip holder. The cold transfer member has its surface covered with a heat insulating material in order to prevent the gas condensation.