JP4887344B2 - ガス電界電離イオン源,走査荷電粒子顕微鏡,光軸調整方法、及び試料観察方法 - Google Patents
ガス電界電離イオン源,走査荷電粒子顕微鏡,光軸調整方法、及び試料観察方法 Download PDFInfo
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Description
n[個cm-3Pa-1]=7.247×1016/T[K] (1)
λ[cm]=6.4E−3(T/p) (4)
またその孔径も、大小種々の孔が選択できるようになっている。対物レンズ12は、ビーム偏向器/アライナー7の偏向支点を試料14上に投影するようにレンズ作用を調整する。この調整により、ビーム偏向器/アライナー7でビーム走査しても、試料上でのビームは走査されなくなる。よって、モニタ画面のSIM像は、そのXY軸をイオンのXY方向放出角とした放出イオン強度分布となる。FIM像がエミッタにおけるイオン放出部を原子レベルで投影した分解能をもっていることから、本SIM像は、可動ビーム制限絞り44の絞り孔に相当するイオン放射立体角でFIM像を畳み込みしてぼかした画像に相当する。このFIM相当画像のイオン放出方向<111>が、ビーム偏向器/アライナー7の走査オフ時に対物レンズ12中心および可動ビーム制限絞り8の孔中心を通るようにビーム偏向器/アライナー7のXY微動調整とアライナー調整を行う。
Mang=αi/αo (5)
2 制御電極
3 引き出し電極
5 イオン
6 集束レンズ
7 ビーム偏向器/アライナー
8 可動ビーム制限絞り
9 ブランキング電極
10 ブランクビーム停止板
11 ビーム偏向器
12 対物レンズ
14 試料
15 二次電子
16 二次電子検出器
17 ビーム制御部
18 PC
19 画像表示手段
20 光軸
30 液体窒素
31 導入パイプ
32 Heガス
33 ガス導入管
34 冷却剤(固体窒素)
35 排気パイプ
36 冷却剤室
37 エミッタ電位印加導線
38 制御電極電位印加導線
39 絶縁物
40 イオン源フランジ
Claims (6)
- 針状の陽極エミッタと、該エミッタ先端部にてガス分子をイオン化して引き出す電界を
形成し、前記ガス分子を差動排気させる引き出し電極と、を有するガス電界電離イオン源であって、
引き出したイオンを通過させる該引き出し電極の孔の孔径が、
前記エミッタ先端部へ微小突起を生成する前の前記エミッタ先端部からの第一のイオン放出角の放出イオンを通過させ、イオン放出方向が確認可能な第一孔径と、
該第一孔径よりも小さく、前記エミッタ先端部へ微小突起を生成した後の該微小突起からの前記第一のイオン放出角よりも小さい第二のイオン放出角の放出イオンを通過させる第二孔径との、少なくとも2種類の値に可変であるガス電界電離イオン源。 - 針状の陽極エミッタと、該エミッタ先端部にてガス分子をイオン化して引き出す電界を
形成し、前記ガス分子を差動排気させる引き出し電極と、を有し、引き出したイオンを通過させる該引き出し電極の孔の孔径が、
前記エミッタ先端部へ微小突起を生成する前の前記エミッタ先端部からの第一のイオン放出角の放出イオンを通過させ、イオン放出方向が確認可能な第一孔径と、
該第一孔径よりも小さく、前記エミッタ先端部へ微小突起を生成した後の該微小突起からの前記第一のイオン放出角よりも小さい第二のイオン放出角の放出イオンを通過させる第二孔径との、
少なくとも2種類の値に可変であるガス電界電離イオン源と、
該イオン源からのイオンを加速し、集束して試料上に照射するレンズ系と、
該試料上に集束されるイオンを制限する制限絞りと、
該試料から放出される荷電粒子を検出する荷電粒子検出器と、
を有する走査荷電粒子顕微鏡。 - 請求項1記載の該ガス電解電離イオン源において、
前記引き出し電極は、固定電極と、前記第一孔径の第一孔および前記第二孔径の第二孔を有する可動電極とを有するガス電界電離イオン源。 - 請求項1記載の該ガス電界電離イオン源において、
前記引き出し電極は、複数の絞り羽を有し、該複数の絞り羽の重なり量を変えて前記孔径を可変にするガス電界電離イオン源。 - 請求項2記載の該走査荷電粒子顕微鏡において、
前記引き出し電極は、固定電極と、前記第一孔径の第一孔および前記第二孔径の第二孔を有する可動電極とを有する走査荷電粒子顕微鏡。 - 請求項2記載の該走査荷電粒子顕微鏡において、
前記引き出し電極は、複数の絞り羽を有し、該複数の絞り羽の重なり量を変えて前記孔径を可変にする走査荷電粒子顕微鏡。
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Publication number | Priority date | Publication date | Assignee | Title |
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JP5086105B2 (ja) * | 2008-01-07 | 2012-11-28 | 株式会社日立ハイテクノロジーズ | ガス電界電離イオン源 |
JP5194133B2 (ja) * | 2009-01-15 | 2013-05-08 | 株式会社日立ハイテクノロジーズ | イオンビーム装置 |
EP2610888B1 (en) * | 2009-06-18 | 2016-11-02 | Carl Zeiss Microscopy, LLC | Cooled charged particle systems and methods |
JP5033844B2 (ja) * | 2009-06-30 | 2012-09-26 | 株式会社日立ハイテクノロジーズ | イオン顕微鏡 |
JP2013506959A (ja) | 2009-09-30 | 2013-02-28 | カール ツァイス エヌティーエス エルエルシー | 可変エネルギー荷電粒子システム |
DE112010004286B4 (de) * | 2009-11-06 | 2021-01-28 | Hitachi High-Tech Corporation | Ladungsteilchenmikroskop |
US8294125B2 (en) * | 2009-11-18 | 2012-10-23 | Kla-Tencor Corporation | High-sensitivity and high-throughput electron beam inspection column enabled by adjustable beam-limiting aperture |
JP5636053B2 (ja) * | 2010-08-06 | 2014-12-03 | 株式会社日立ハイテクノロジーズ | ガス電界電離イオン源及びその使用方法、並びに、イオンビーム装置 |
WO2012168225A1 (en) | 2011-06-06 | 2012-12-13 | Centre National De La Recherche Scientifique - Cnrs - | Ion source, nanofabrication apparatus comprising such source, and a method for emitting ions |
JP5723730B2 (ja) * | 2011-09-05 | 2015-05-27 | 株式会社日立ハイテクノロジーズ | エミッタ、ガス電界電離イオン源、およびイオンビーム装置 |
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- 2008-12-03 DE DE102008060270.1A patent/DE102008060270B4/de not_active Expired - Fee Related
- 2008-12-12 US US12/314,553 patent/US20090152462A1/en not_active Abandoned
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- 2011-08-29 JP JP2011185432A patent/JP5194154B2/ja active Active
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US10916405B2 (en) | 2019-03-08 | 2021-02-09 | Toshiba Memory Corporation | Atom probe inspection device, field ion microscope, and distortion correction method |
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JP2009164110A (ja) | 2009-07-23 |
JP2011238630A (ja) | 2011-11-24 |
DE102008060270B4 (de) | 2020-08-06 |
DE102008060270A1 (de) | 2009-06-25 |
JP5194154B2 (ja) | 2013-05-08 |
US20130087704A1 (en) | 2013-04-11 |
US20090152462A1 (en) | 2009-06-18 |
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