JP5575165B2 - イオン移送装置及びその方法 - Google Patents
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/06—Electron- or ion-optical arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/06—Electron- or ion-optical arrangements
- H01J49/062—Ion guides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/14—Arrangements for focusing or reflecting ray or beam
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Electron Tubes For Measurement (AREA)
- Sampling And Sample Adjustment (AREA)
Description
式中、dは、導管の直径であり、Rは、その点から入口オリフィス30までの距離であり、Cは定数であり、ΔPは圧力低下である。イオン速度は、Vion=Vgas+KEであって、式中、Kはイオン移動度であり、Eは電界強度である。Kを、約10−4m2/s、Eを、約5×105V/mとすると、電界によって生じる速度は、約50m/sとなる。内径0.5mmの導管中でのガス流速はほぼ同じ値であるが、入口オリフィス30から5mmの距離では、ガスと共に移動するイオンは、電界中での移動より約10倍も遅くなる。このため、この領域でのイオン滞留時間は、10−4sの範囲であり、上記の式(2)による空間電荷斥力のため、イオン損失は約50%となる。
1.液滴を蒸発させるために必要な時間
2.ガス流が層流から乱流に変わる臨界速度
3.ガス流が音速まで加速された際の衝撃波の出現。これは特に、領域5から領域1にかけて大きな圧力低下(およそ1000mbar(1000hPa)から1mbar(1hPa)へ)が起こる場合である。
Claims (12)
- 相対的に圧力の高い領域と相対的に圧力の低い領域との間でイオンを輸送するためのイオン移送装置であって、
前記相対的に圧力の高い領域に向けて開口する入口を有する、排気される輸送チャンバと、
ガスおよび連行されたイオンが通過するイオン移送チャネルを含み、前記排気される輸送チャンバの出口に向けて開口する入口と前記相対的に圧力の低い領域に向けて開口する出口を有するイオン移送導管と、
大気圧より低いが前記イオン移送チャネル内にイオンおよびガスの粘性流れを維持するのに十分な圧力に、前記イオン移送導管の圧力を制御するように構成されているポンピング手段と、
前記排気される輸送チャンバの入口と出口の間の前記排気される輸送チャンバ内に配置され、前記相対的に圧力の高い領域からのイオンを前記イオン移送チャネルに収束する空力、および/または、電気レンズと、
を備えたことを特徴とするイオン移送装置。 - 請求項1に記載のイオン移送装置であって、
前記イオン移送チャネルを取り囲む、少なくとも1つの側壁と、
前記イオン移送チャネル内から、前記側壁の外側の、圧力の低い領域へガスが流れるよう、前記側壁の長手方向に形成した複数の開口部と、
を含むことを特徴とするイオン移送装置。 - 請求項1または2に記載のイオン移送装置であって、
前記イオン移送チャネル内へ熱を伝導、対流、および/または、放射するため、前記イオン移送導管の付近にヒーターを更に含むことを特徴とするイオン移送装置。 - 請求項2または3に記載のイオン移送装置であって、前記側壁は、金属フリット、金属スポンジ、浸透性セラミック、および浸透性ポリマーの少なくとも1つを含む材料からできており、前記側壁中の前記開口部は、前記材料中の細孔または間隙によって構成されていることを特徴とするイオン移送装置。
- 請求項1〜4のいずれか1つに記載のイオン移送装置であって、前記空力、および/または、電気レンズは、イオン軌跡に沿って湾曲した形状の開口部を有することを特徴とするイオン移送装置。
- 請求項1〜5のいずれか1つに記載のイオン移送装置であって、空力、および/または、電気レンズは、複数の独立した環形レンズ電極から成り、前記イオン移送導管に近いレンズ電極は、前記イオン移送導管から遠いレンズ電極より小さい開口部を備えていることを特徴とするイオン移送装置。
- 請求項6に記載のイオン移送装置であって、前記イオン移送導管に近い前記レンズ電極の開口部の半径は、前記イオン移送導管によって構成されている前記イオン移送チャネルの半径よりも小さいことを特徴とするイオン移送装置。
- 請求項1〜7のいずれか1つに記載の装置であって、
前記排気される輸送チャンバは、大気圧より低いが、前記排気される輸送チャンバを通るガスおよびイオンの粘性流れが維持されるに十分高い、圧力に排気される、イオン移送装置。 - 相対的に圧力の高い領域と相対的に圧力の低い領域との間でガスおよび連行されたイオンを輸送するためのイオン移送方法であって、
前記相対的に圧力の高い領域に向けて開口する入口を有する排気される輸送チャンバと、前記排気される輸送チャンバの出口に向けて開口する入口と前記相対的に圧力の低い領域に向けて開口する出口を有し、ガスおよび連行されたイオンが通過するイオン移送チャネルを含むイオン移送導管を提供し、
前記相対的に圧力の高い領域から、イオンとガスの混合物を、前記排気される輸送チャンバの入口と出口の間の前記排気される輸送チャンバ内に配置され、前記相対的に圧力の高い領域からのイオンを前記イオン移送チャネルを有する前記イオン移送導管に収束する空力、および/または、電気レンズを介し、前記排気される輸送チャンバの入口に導入し、
大気圧より低いが前記イオン移送チャネル内にイオンおよびガスの粘性流れを維持するのに十分な圧力に前記イオン移送導管を排気する、
前記イオンおよび残留ガスを、前記イオン移送導管の出口を介しイオン移送導管から前記相対的に圧力の低い領域に向けて排出させる、
イオン移送方法。 - 請求項9に記載の方法であって、前記イオン移送チャネル内に残留する液状溶媒の蒸発を促進するよう、前記イオン移送チャネルを加熱する工程を更に含むことを特徴とする方法。
- 請求項9または10に記載の方法であって、前記イオン移送導管が設置されている前記排気チャンバを、大気圧より低い圧力まで排気する工程は、前記チャンバを、約600mbar(約600hPa)と1mbar(1hPa)との間の圧力に排気する工程を含む、する方法。
- 請求項9〜11のいずれか1つに記載の方法であって、
前記排気される輸送チャンバは、大気圧より低いが、前記排気される輸送チャンバを通って、ガスおよびイオンの粘性流れが維持されるに十分高い、圧力に排気される、方法。
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85773706P | 2006-11-07 | 2006-11-07 | |
| US60/857,737 | 2006-11-07 | ||
| US11/833,209 | 2007-08-02 | ||
| US11/833,209 US20090283674A1 (en) | 2006-11-07 | 2007-08-02 | Efficient Atmospheric Pressure Interface for Mass Spectrometers and Method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009535623A Division JP2010508643A (ja) | 2006-11-07 | 2007-11-07 | イオン移送装置 |
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| Publication Number | Publication Date |
|---|---|
| JP2012114096A JP2012114096A (ja) | 2012-06-14 |
| JP2012114096A5 JP2012114096A5 (ja) | 2013-10-10 |
| JP5575165B2 true JP5575165B2 (ja) | 2014-08-20 |
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| JP2009535621A Expired - Fee Related JP5011393B2 (ja) | 2006-11-07 | 2007-11-07 | イオン移送装置 |
| JP2009535623A Pending JP2010508643A (ja) | 2006-11-07 | 2007-11-07 | イオン移送装置 |
| JP2009535622A Expired - Fee Related JP5197618B2 (ja) | 2006-11-07 | 2007-11-07 | イオン移送装置及びその方法 |
| JP2012043734A Expired - Fee Related JP5575165B2 (ja) | 2006-11-07 | 2012-02-29 | イオン移送装置及びその方法 |
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| JP2009535621A Expired - Fee Related JP5011393B2 (ja) | 2006-11-07 | 2007-11-07 | イオン移送装置 |
| JP2009535623A Pending JP2010508643A (ja) | 2006-11-07 | 2007-11-07 | イオン移送装置 |
| JP2009535622A Expired - Fee Related JP5197618B2 (ja) | 2006-11-07 | 2007-11-07 | イオン移送装置及びその方法 |
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| Country | Link |
|---|---|
| US (4) | US20090283674A1 (ja) |
| JP (4) | JP5011393B2 (ja) |
| CN (1) | CN102768936A (ja) |
| CA (3) | CA2668762C (ja) |
| DE (3) | DE112007002661B4 (ja) |
| GB (3) | GB2456720B (ja) |
| WO (3) | WO2008055668A2 (ja) |
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