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    • 3. 发明公开
    • Electron beam irradiation apparatus and method
    • Vorrichtung und Verfahren zur Bestrahlung mittels Elektronen
    • EP1339084A2
    • 2003-08-27
    • EP03250922.6
    • 2003-02-14
    • SONY CORPORATIONJeol Ltd.
    • Miura, Yoshihisa, c/o Sony CorporationAki, Yuichi, c/o Sony CorporationKawase, Hiroshi, c/o Sony CorporationYamamoto, Masanobu, c/o Sony CorporationDate, NaokiNorioka, SetsuoKoikumi, MitsuruKomatsubara, Gakuo
    • H01J37/301H01J37/20
    • H01J37/18G11B7/261H01J37/305H01J37/3056H01J2237/162H01J2237/188
    • An electron beam irradiation apparatus in a partial vacuum method is structured with a static pressure floating pad 18 connected to a vacuum chamber 14 containing an electron beam column 15 and in a condition that the static pressure floating pad 18 is attached to a subject 1 to be irradiated without contacting, and an electron beam irradiating the subject 1 to be irradiated through an electron beam path 19 of the static pressure floating pad 18, whereby the vacuum chamber and the electron beam column can be maintained in the required degree of vacuum even in a condition that the static pressure floating pad 18 is separated from the subject 1 to be irradiated. A vacuum seal valve 30 including a piston to open and close the electron beam path 19 is provided within the static pressure floating pad 18. When the static pressure floating pad 18 is separated from the subject 1, the vacuum seal valve 30 is structured to be activated to close the electron beam path 19 so as to prevent the air from flowing into the vacuum chamber 14. In this structure, the vacuum seal valve 30 is formed with a round shaped cross section and in a tapered shape with a narrow tip so as to accomplish high vacuum seal without a gap, so that the degree of vacuum in the vacuum chamber and the electron beam column can surely be maintained.
    • 部分真空法中的电子束照射装置由连接到包含电子束柱15的真空室14的静压浮动垫18构成,并且在将静压浮动垫18附着到被检体1的状态下 照射没有接触的电子束,以及照射被摄体1以通过静压浮动垫18的电子束路径19照射的电子束,由此即使在真空室和电子束柱中也可以将真空室和电子束柱保持在所需的真空度 条件是静压浮动垫18与待照射的被检体1分离。 在静压浮动垫18内设置包括打开和关闭电子束通道19的活塞的真空密封阀30.当静压浮动垫18与被检体1分离时,真空密封阀30构成为 激活以闭合电子束路径19,以防止空气流入真空室14.在该结构中,真空密封阀30形成为圆形截面并具有窄尖端的锥形形状,以便 以实现高真空密封而没有间隙,从而可以可靠地保持真空室和电子束柱中的真空度。