JPS6282638A - Secondary electron detector - Google Patents

Secondary electron detector

Info

Publication number
JPS6282638A
JPS6282638A JP60222832A JP22283285A JPS6282638A JP S6282638 A JPS6282638 A JP S6282638A JP 60222832 A JP60222832 A JP 60222832A JP 22283285 A JP22283285 A JP 22283285A JP S6282638 A JPS6282638 A JP S6282638A
Authority
JP
Japan
Prior art keywords
scintillator
glass tube
tube
fixed
bottomed glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP60222832A
Other languages
Japanese (ja)
Other versions
JPH056876B2 (en
Inventor
Hiroshi Yanagida
柳田 博司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ulvac Inc
Original Assignee
Ulvac Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ulvac Inc filed Critical Ulvac Inc
Priority to JP60222832A priority Critical patent/JPS6282638A/en
Publication of JPS6282638A publication Critical patent/JPS6282638A/en
Publication of JPH056876B2 publication Critical patent/JPH056876B2/ja
Granted legal-status Critical Current

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  • Measurement Of Radiation (AREA)

Abstract

PURPOSE:To eliminate the elastomer seal thus to enable transmission only of such light as emitted from a scintillator by separating the vacuum side and the atmospheric side through a glass tube and a copal tube while galvanizing the inside of the glass tube except such portion as facing against the scintillator. CONSTITUTION:A copal tube 7 is fixed to a hole 6 of a flange 5 while projecting to the vacuum side and a bottomed glass tube 8 is jointed to the tip. A scintillator 2 is fixed to the outside of the closed end section of the bottomed glass tube and a grid 1 is fixed to the bottomed glass tube 8 while covering the scintillator 2. A light guide 3 is fixed to the inside at the closed end section of the bottomed glass tube and a photo-multiplier 4 is fixed to the rear. Furthermore, reflection film 9 such as silver is applied onto the inside of the bottomed glass tube 8 except such portion as facing against the scintillator 2. Consequently, elastomer seal is not required to enable transmission only of the light emitted from the scintillator.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は走査型電子顕微鏡等に用いらnる、シンチレー
タと光電子増倍管とを組み台わせた二次電子検出器(−
関するものである。  。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a secondary electron detector (-
It is related to .

〔従来の技術〕[Conventional technology]

従来から電子顕微鏡等に用いらnできた二次電子検出器
は、第2図に示すよう(−、ライトガイド13の先端に
シンチレータ/2を取り付け、シンチレータ12にはグ
リッド/lを被せ、さらにライトガイド/3の後端には
光電子増倍管いわゆるフォトマル14Iを接続して一体
化したもので、この検出器は、真空側と大側とを分離す
る7ランジl!の孔/6からグリッド//、シンチレー
タ/コおよびライトガイド13を真空側に突出し、エラ
ストマ・シール/7によって真空をシールしたものであ
った。
A secondary electron detector that has conventionally been used in electron microscopes, etc. is as shown in Fig. A photomultiplier tube, so-called Photomul 14I, is connected to the rear end of the light guide /3, and this detector is connected to the rear end of the light guide /3. The grid, scintillator, and light guide 13 were protruded toward the vacuum side, and the vacuum was sealed with an elastomer seal.

上記の装置において、二次電子がシンチレータ/2に当
たると光信号を発生し1光信号はライトガイド13を通
って7オトマルl≠に達し、そこで電気信号に変換さn
ると同時に増幅さ1−1図示しないディスプレイ等に伝
達さnるようになっている。
In the above device, when the secondary electrons hit the scintillator/2, it generates an optical signal, and the optical signal passes through the light guide 13 and reaches 7 otomaru l≠, where it is converted into an electrical signal n
At the same time, the signal is amplified and transmitted to a display, etc. (not shown).

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記のような二次電子検出器は、真空をシールするの(
=エラストマが用いらnているため耐熱−生に問題があ
り、このようなシールを介して検出器を取り付けた場合
は高真空を得るためベーキングすることができない上、
エラストマからの放出ガス量が多いので超高真空装置に
は使用することができなかった。
A secondary electron detector like the one described above can seal the vacuum (
= Since elastomer is used, there is a problem with heat resistance, and if the detector is attached through such a seal, it cannot be baked to obtain a high vacuum, and
Due to the large amount of gas released from the elastomer, it could not be used in ultra-high vacuum equipment.

そこでこnらの難点を解決するため、真空側と大気側と
を透明なガラスによって分離したものが提案さrtた。
In order to solve these difficulties, a system was proposed in which the vacuum side and the atmospheric side were separated by transparent glass.

すなわち、第3図(=示すように、フランジ/jの孔/
lに嵌めたガラス窓itの一側に、先端(=グリッドl
/およびシンチレータ/、!を取り付けたライトガイド
13を接甘し、他側に7オトマル/≠を設置することC
二より1エラストマーシールを不要としたものである。
In other words, as shown in Fig.
On one side of the glass window it is fitted with
/and scintillator/,! Attach the light guide 13 with C and install 7 otomaru/≠ on the other side.
2) 1) Eliminates the need for an elastomer seal.

しかしながらこの装置は、エラストマの問題は解決さ几
たが、ライトガイド13が真空側に露出していてしかも
コーティング等(=よる遮蔽が困難であるため、シンチ
レータ/2の発生した光取外の迷光を拾うことが避けら
几なかった。
However, although this device did not solve the problem of the elastomer, the light guide 13 was exposed to the vacuum side and it was difficult to shield it with coatings (==), so the stray light generated by the scintillator/2 was removed. I couldn't avoid picking it up.

本発明は上記ガラス窓を備えた装置における問題点を解
決した二次電子検出器を提供することを目的とするもの
である。
An object of the present invention is to provide a secondary electron detector that solves the problems of the above-mentioned devices equipped with a glass window.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は、上記の問題点を解決する手段として、フラン
ジの孔に貫通したコバール管を真空側に突出させ、該コ
バール管の先端に有底ガラス管を底部を先にして接甘し
、該有底ガラス管の底部外側にシンチレータをまた底部
内側にライトガイドおよび/まfcハフオトマルをそn
ぞ−n@り付けるとともに、前記有底ガラス管の内側に
前記シンチレータ対向部分を除いてメッキすることによ
り迷元反射島を形成したことを特徴とする二次電子検出
器。を提供するものでるる。
As a means to solve the above problems, the present invention makes a Kovar tube penetrated through a hole in a flange protrude toward the vacuum side, and attaches a bottomed glass tube to the tip of the Kovar tube with the bottom first. A scintillator is installed on the outside of the bottom of the bottomed glass tube, and a light guide and/or fc heater are installed on the inside of the bottom.
A secondary electron detector characterized in that a stray source reflection island is formed by plating the inside of the bottomed glass tube except for the portion facing the scintillator. It is something that provides.

〔作用〕[Effect]

本発明に、7ランジ、コバール管および有底ガラス管に
よって真空側と大気側とを分離するととも(=、有底ガ
ラス管の内側にシンチレータ対MW分を除いて反射膜を
形成したので、エラストマ・シールを必要とせずC二真
空側と大気側とを分離することができるとともに、反射
膜によりシンチレータの発光のみを伝達することが可能
になった。
In the present invention, the vacuum side and the atmosphere side are separated by a 7-lunge, a Kovar tube, and a bottomed glass tube. - It is possible to separate the C2 vacuum side and the atmosphere side without the need for a seal, and it has become possible to transmit only the light emitted from the scintillator using the reflective film.

〔実施例〕〔Example〕

第1図に本発明の基本的構想を示す側面図で、フランジ
!の孔乙には、コバール管7が真空側(ユ突出して取り
付けらnlその先端には端部を閉鎖さj、た有底ガラス
管tが底部を先にして接甘さnている。有底ガラス管r
の閉鎖端部外側(真空側1)には、シンチレータコが取
り付けらn、その上を覆うように有底ガラス管?にはグ
リッドlが取り付けら几ている。有底ガラス管rの閉鎖
端部内側(大気側)には、ライトガイド3が取り付けら
f′L%その後に、フォトマル≠が取り付けらnでいる
。
Fig. 1 is a side view showing the basic concept of the present invention. A Kovar tube 7 is attached to the hole 7 with its end protruding from the vacuum side, and a glass tube 7 with a bottom is attached with the bottom end first. bottom glass tube r
A scintillator is attached to the outside of the closed end (vacuum side 1), and a bottomed glass tube is placed over it. A grid l is attached to it. A light guide 3 is attached to the inside of the closed end (atmospheric side) of the bottomed glass tube r, and then a photomultiplier is attached.

このライトガイド3は省くことも可能である。有底ガラ
ス管rの内側には、シンチレータλの発光以外の迷光が
入るのを防ぐため、シンチレータコの対向部分を除いて
銀等の反射膜りがコーティングさnている。
This light guide 3 can also be omitted. The inside of the bottomed glass tube r is coated with a reflective film such as silver, except for the portion facing the scintillator, to prevent stray light other than the light emitted from the scintillator from entering.

したがって、真空側と大気側とは、フランジ!、有底ガ
ラス管rおよびコバール管7によって完全(部分離さ几
、シンチレータ2の発光のみが、ライトガイド3を通っ
てフォトマル弘に達し、電気信号に変換さnるとともに
増幅ざn、外部に伝達さする。
Therefore, the vacuum side and the atmosphere side are flanges! , completely (partially separated) by the bottomed glass tube r and the Kovar tube 7, only the light emitted from the scintillator 2 passes through the light guide 3, reaches the photometer, is converted into an electrical signal, and is amplified and sent to the outside. Transmit.

第弘図は上記第3図のものを、幾分具体的に図示した側
面図で、同じ符号は同じ部品を示し、また!はシンチレ
ータカバー、lはフォトマルソケットをそ几ぞn示す。
Figure 3 is a somewhat more specific side view of the one shown in Figure 3 above, where the same reference numerals indicate the same parts, and! 1 indicates a scintillator cover, and 1 indicates a photomulti socket.

ただし、第弘図のものにおいては、ライトガイドは省略
さ几、フォトマル弘が直接ガラス管gの内側(=取り付
けら几ている。また、7ランジ(たとえば、ICF−0
70等の超高真空用のコンフラツトフランジ)3には、
二次電子検出器の他(−1さらに、シンチレータコに高
電圧を印加するための高圧端子IOが設置さnている・
本 発明は超高真空を必要とする表面分析装置等に組み込む
ことができ、第3図は本発明の二次電子検出器(−よっ
て得らnた二次電子像の一例である。
However, in the one shown in Figure 1, the light guide is omitted and the photo guide is directly attached to the inside of the glass tube.
Conflat flange for ultra-high vacuum such as 70 etc.) 3,
In addition to the secondary electron detector (-1), a high voltage terminal IO for applying high voltage to the scintillator is installed.
The present invention can be incorporated into a surface analysis device that requires an ultra-high vacuum, and FIG. 3 is an example of a secondary electron image obtained by the secondary electron detector of the present invention.

〔発明の効果〕〔Effect of the invention〕

本発明は真空側と大気側とをガラス管、コバールによっ
て分離しタタめ、エラストマ1シールによる従来の不A
せを完全に解消することができ、しかも反射膜によって
真空側の迷光を遮断す゛ることができるので、空気の漏
洩に妨げらnることなく。
The present invention separates the vacuum side and the atmosphere side with a glass tube and Kovar, and separates the vacuum side and the atmosphere side.
Moreover, since the reflective film can block stray light on the vacuum side, there is no problem with air leakage.

長時間にわたって正確な検査、測定をすることが可能と
なった。
It has become possible to perform accurate inspections and measurements over long periods of time.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の基本的構想を示す概念的細断ん具体的
な構造を示す側面図。 J・・・シンチレータ、3・・・ライトガイド、≠・・
・フォトマル、j・・・フランジ、7・・・コバール管
、!・・・有底ガラス管、り・・・メッキ層 図面の?Nシ(内6に変更なし〕 第4図 第5図 不 手続補正書(方式) %式% 1、事件の表示 昭和60年 特許願 第 222832号2、発明の名
称 二次電子検出器 3、補正をする者 事件との関係   特許出願人 住 所 神奈川県茅ケ崎市萩園2500番地名称  日
本真空技術株式会社 4、代理人 〒105住所 東京都港区西新橋1丁目1番15号物産
ビル別館 電話(591) 02616、補正の内容 別紙の通)
FIG. 1 is a side view showing a conceptual fragmentation concrete structure showing the basic concept of the present invention. J...Scintillator, 3...Light guide, ≠...
・Photomaru, j...flange, 7...Kovar tube,! ... bottomed glass tube, ri... plating layer drawing? Nshi (no change in 6) Figure 4 Figure 5 Non-procedural amendment (method) % formula % 1. Indication of the case 1985 Patent application No. 222832 2. Name of the invention Secondary electron detector 3. Relationship with the person making the amendment Patent applicant Address 2500 Hagizono, Chigasaki City, Kanagawa Prefecture Name Japan Vacuum Technology Co., Ltd. 4, Agent Address 105 Address Bussan Building Annex, 1-1-15 Nishi-Shinbashi, Minato-ku, Tokyo Telephone ( 591) 02616, Attached sheet of amendment details)

Claims (1)

【特許請求の範囲】[Claims] フランジの孔に貫通したコバール管を真空側に突出させ
、該コバール管の先端に有底ガラス管を底部を先にして
接合し、該有底ガラス管の底部外側にシンチレータをま
た底部内側にライトガイドおよび/またはフォトマルを
それぞれ取り付けるとともに、前記有底ガラス管の内側
に前記シンチレータ対向部分を除いてメッキすることに
より迷光反射層を形成したことを特徴とする二次電子検
出器。
A Kovar tube penetrated through the hole in the flange is projected to the vacuum side, a bottomed glass tube is joined to the tip of the Kovar tube with the bottom first, and a scintillator is placed on the outside of the bottom of the bottom glass tube, and a light is placed on the inside of the bottom. A secondary electron detector, characterized in that a guide and/or a photomultiplier are attached to each, and a stray light reflecting layer is formed by plating the inside of the bottomed glass tube except for the portion facing the scintillator.
JP60222832A 1985-10-08 1985-10-08 Secondary electron detector Granted JPS6282638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60222832A JPS6282638A (en) 1985-10-08 1985-10-08 Secondary electron detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60222832A JPS6282638A (en) 1985-10-08 1985-10-08 Secondary electron detector

Publications (2)

Publication Number Publication Date
JPS6282638A true JPS6282638A (en) 1987-04-16
JPH056876B2 JPH056876B2 (en) 1993-01-27

Family

ID=16788607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60222832A Granted JPS6282638A (en) 1985-10-08 1985-10-08 Secondary electron detector

Country Status (1)

Country Link
JP (1) JPS6282638A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002206278A (en) * 2001-01-11 2002-07-26 Misawa Homes Co Ltd Balcony construction method and balcony structure
JP2012138324A (en) * 2010-12-28 2012-07-19 Topcon Corp Secondary electron detector and charge particle beam apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002206278A (en) * 2001-01-11 2002-07-26 Misawa Homes Co Ltd Balcony construction method and balcony structure
JP2012138324A (en) * 2010-12-28 2012-07-19 Topcon Corp Secondary electron detector and charge particle beam apparatus

Also Published As

Publication number Publication date
JPH056876B2 (en) 1993-01-27

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