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:
Aug. 16, 2016
Filed:
Mar. 18, 2014
Hitachi High-tech Science Corporation, Minato-ku, Tokyo, JP;
Abstract
A focused ion beam apparatus has an emitter for emitting an ion beam, an ion source chamber accommodating the emitter, a cooling unit and a heating unit for cooling and heating, respectively, the emitter, and an ion source gas supply section for supplying to the ion source chamber an ion source gas that is exchangeable with another ion source gas. A control section controls an operation of the cooling unit such that a temperature of a wall surface contacting the ion source gas in the ion source chamber is maintained at a temperature higher than a temperature at which the ion source gas before and after the exchange freezes. The control section controls an operation of the heater so that the emitter is temporarily heated to release the ion source gas from a surface of the emitter before the ion source gas is exchanged with the other ion source gas.