GB1232613A - - Google Patents
Info
- Publication number
- GB1232613A GB1232613A GB1232613DA GB1232613A GB 1232613 A GB1232613 A GB 1232613A GB 1232613D A GB1232613D A GB 1232613DA GB 1232613 A GB1232613 A GB 1232613A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scanning
- mass
- voltage
- oct
- variation
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/26—Mass spectrometers or separator tubes
- H01J49/28—Static spectrometers
- H01J49/30—Static spectrometers using magnetic analysers, e.g. Dempster spectrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Electron Tubes For Measurement (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
1,232,613. Mass spectrometers. PERKINELMER CORP. 11 Oct., 1968 [16 Oct., 1967], No. 48347/68. Heading H1D. In a magnetic mass spectrometer both the flux density B and the ion accelerating voltage V are varied linearly with time while the ratio B/V is maintained constant during a scanning interval of the mass spectrum. This enables a linear recording of the mass data as a function time without, due to a resulting varying resolution accompanying the variation of V, an increase in the bandwidth of the scanning and peak amplifying components of the spectrometer. As shown the current scanner 26 for the electromagnet 24 and the voltage scanner 16 for the ion source electrode 14 are both supplied by a scanning signal source 30. A feedback circuit including a flux sensing transducer may be provided to detect any variation in the linearity of the scanning current and to provide a correcting signal. Alternatively the varying voltage generator may comprise a closed circuit loop including a dividing network 42, Fig. 4, which provides an output voltage representative of the ratio B/V, a slope adjusting circuit 44 and an amplifier 46.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67815167A | 1967-10-16 | 1967-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1232613A true GB1232613A (en) | 1971-05-19 |
Family
ID=24721606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1232613D Expired GB1232613A (en) | 1967-10-16 | 1968-10-11 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3527938A (en) |
| JP (1) | JPS5011269B1 (en) |
| GB (1) | GB1232613A (en) |
| SE (1) | SE331919B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3742228A (en) * | 1971-03-04 | 1973-06-26 | Varian Associates | Magnet control circuit utilizing square root circuit and additional compensation circuit |
| JPS60119277U (en) * | 1984-01-20 | 1985-08-12 | 林 利雄 | Patsukin assembles a cylinder into a triangular pyramid |
| WO2017075470A1 (en) * | 2015-10-28 | 2017-05-04 | Duke University | Mass spectrometers having segmented electrodes and associated methods |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2969461A (en) * | 1958-09-05 | 1961-01-24 | Exxon Research Engineering Co | Electro-mechanical scanning voltage regulator |
| US2969462A (en) * | 1958-09-05 | 1961-01-24 | Exxon Research Engineering Co | Mass spectrometry |
-
1967
- 1967-10-16 US US678151A patent/US3527938A/en not_active Expired - Lifetime
-
1968
- 1968-10-10 SE SE13664/68A patent/SE331919B/xx unknown
- 1968-10-11 GB GB1232613D patent/GB1232613A/en not_active Expired
- 1968-10-16 JP JP43075199A patent/JPS5011269B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SE331919B (en) | 1971-01-18 |
| US3527938A (en) | 1970-09-08 |
| JPS5011269B1 (en) | 1975-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |