GB1149426A - Improvements relating to mass spectrometry - Google Patents
Improvements relating to mass spectrometryInfo
- Publication number
- GB1149426A GB1149426A GB53876/66A GB5387666A GB1149426A GB 1149426 A GB1149426 A GB 1149426A GB 53876/66 A GB53876/66 A GB 53876/66A GB 5387666 A GB5387666 A GB 5387666A GB 1149426 A GB1149426 A GB 1149426A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- ion
- peak
- mass
- collector
- 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
- H01J49/02—Details
- H01J49/022—Circuit arrangements, e.g. for generating deviation currents or voltages ; Components associated with high voltage supply
-
- 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
- H01J49/32—Static spectrometers using double focusing
- H01J49/326—Static spectrometers using double focusing with magnetic and electrostatic sectors of 90 degrees
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Electron Tubes For Measurement (AREA)
Abstract
1,149,426. Mass spectrometers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 24 Nov., 1967 [1 Dec., 1966], No. 53876/66. Heading H1D. In a double-focusing mass spectrometer metastable mass peaks are recorded utilizing ion decompositions occurring both in the ion source 2 and in the region A between the ion source and the electrostatic analyser 5 by producing a scanning variation of the voltage ratio between the ion accelerating voltage and the electrostatic analyser deflection voltage, e.g. by producing a scanning variation of the ion accelerating voltage unaccompanied by complementary variation of the electrostatic analyser deflection voltage. The varying ion collector output is recorded in time correlation with the scanning variation. The collector output and also the voltage ratio may be periodically sampled and presented in digital form (Fig. 3) and a peak top sensing unit may be included (Fig. 5). The recording circuit may include a threshold detector responsive to the collector output rising above a set value towards a peak (Fig. 6). In a fully automated system the magnetic field of the magnetic analyser is scanned, preferably by decreasing the magnetic field exponentially, and as each peak is detected an accelerating voltage scan is made (Fig. 9). Each peak is arranged to have a flat top where a change in magnetic field produces little or no change in collector ion current, e.g. by suitable adjustment of the source and collector slits 4, 7. Provision may be made for discontinuing the magnet field scan for the duration of each voltage scan without interrupting the magnet current by use of a flux stabilizing arrangement (Fig. 10). A mass marker may also be included presenting mass identification in digital form. Examples are given of specific circuitry for suitable threshold detectors for the voltage sweep generator and for the accelerating voltage supply (Figs. 11 and 12).
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB53876/66A GB1149426A (en) | 1966-12-01 | 1966-12-01 | Improvements relating to mass spectrometry |
DE19671648810 DE1648810A1 (en) | 1966-12-01 | 1967-11-30 | mass spectrometry |
SE16472/67A SE321587B (en) | 1966-12-01 | 1967-11-30 | |
NL6716310A NL6716310A (en) | 1966-12-01 | 1967-11-30 | |
FR1562853D FR1562853A (en) | 1966-12-01 | 1967-11-30 | |
US79675A US3689764A (en) | 1966-12-01 | 1970-10-09 | Mass spectrometer scanning |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB53876/66A GB1149426A (en) | 1966-12-01 | 1966-12-01 | Improvements relating to mass spectrometry |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1149426A true GB1149426A (en) | 1969-04-23 |
Family
ID=10469272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB53876/66A Expired GB1149426A (en) | 1966-12-01 | 1966-12-01 | Improvements relating to mass spectrometry |
Country Status (6)
Country | Link |
---|---|
US (1) | US3689764A (en) |
DE (1) | DE1648810A1 (en) |
FR (1) | FR1562853A (en) |
GB (1) | GB1149426A (en) |
NL (1) | NL6716310A (en) |
SE (1) | SE321587B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3673404A (en) * | 1970-05-15 | 1972-06-27 | Perkin Elmer Corp | Ion kinetic energy analysis |
GB2133924A (en) * | 1983-01-17 | 1984-08-01 | Jeol Ltd | Mass spectrometry |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3831026A (en) * | 1966-05-17 | 1974-08-20 | P Powers | Plural beam mass spectrometer and method of conducting plural beam studies |
JPS5222558B2 (en) * | 1972-12-18 | 1977-06-17 | ||
JPS5546420A (en) * | 1978-09-29 | 1980-04-01 | Hitachi Ltd | Mass spectroscope |
GB9019560D0 (en) * | 1990-09-07 | 1990-10-24 | Vg Instr Group | Method and apparatus for mass spectrometry |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3010060A (en) * | 1957-02-18 | 1961-11-21 | Exxon Research Engineering Co | Input voltage controlled servosystem with one way drive output |
US2945126A (en) * | 1958-06-23 | 1960-07-12 | Bell & Howell Co | Mass spectrometer |
GB957084A (en) * | 1961-10-19 | 1964-05-06 | Ass Elect Ind | Improvements relating to mass spectrometers |
US3416073A (en) * | 1966-02-18 | 1968-12-10 | Varian Associates | Precision magnetic field intensity scanner and mass spectrometer using same |
-
1966
- 1966-12-01 GB GB53876/66A patent/GB1149426A/en not_active Expired
-
1967
- 1967-11-30 FR FR1562853D patent/FR1562853A/fr not_active Expired
- 1967-11-30 DE DE19671648810 patent/DE1648810A1/en active Pending
- 1967-11-30 NL NL6716310A patent/NL6716310A/xx unknown
- 1967-11-30 SE SE16472/67A patent/SE321587B/xx unknown
-
1970
- 1970-10-09 US US79675A patent/US3689764A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3673404A (en) * | 1970-05-15 | 1972-06-27 | Perkin Elmer Corp | Ion kinetic energy analysis |
GB2133924A (en) * | 1983-01-17 | 1984-08-01 | Jeol Ltd | Mass spectrometry |
Also Published As
Publication number | Publication date |
---|---|
SE321587B (en) | 1970-03-09 |
US3689764A (en) | 1972-09-05 |
FR1562853A (en) | 1969-04-11 |
DE1648810A1 (en) | 1971-08-12 |
NL6716310A (en) | 1968-06-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4458149A (en) | Time-of-flight mass spectrometer | |
US2582216A (en) | Mass spectrometer | |
GB1448322A (en) | Dynamic mass spectrometers | |
US3626181A (en) | Gas detecting apparatus with means to record detection signals in superposition for improved signal-to-noise ratios | |
GB1149426A (en) | Improvements relating to mass spectrometry | |
GB965122A (en) | Charged-particle beam interceptor | |
US3641340A (en) | Multichannel readout mass spectrometer | |
GB995188A (en) | Spatial discriminator for analyzing the cross-section of particle beams | |
US3475604A (en) | Mass spectrometer having means for simultaneously detecting single focussing and double focussing mass spectra | |
US2975278A (en) | Mass spectrometer | |
US3829689A (en) | System for measuring and recording gas chromatograms and mass spectra by a direct combination of a gas chromatograph and a quadrupole mass spectrometer | |
GB1126102A (en) | Mass spectrometer | |
US2976413A (en) | Mass spectrometer | |
GB1232613A (en) | ||
Braams et al. | Composition of Noble Gas Ion Beams Produced with a Duoplasmatron | |
GB803742A (en) | Improvements relating to mass spectrometers | |
GB1005824A (en) | Spectrometers employing diffraction gratings | |
GB1114005A (en) | Improvements in or relating to mass spectrometers and mass spectrometry | |
GB1286669A (en) | Mass spectrometer apparatus | |
SU400865A1 (en) | METHOD OF NEUTRON REGISTRATION | |
GB1318400A (en) | Mass spectrometry | |
GB957084A (en) | Improvements relating to mass spectrometers | |
GB1248761A (en) | Improvements in or relating to spark source mass spectrometry | |
GB1161432A (en) | Improvements relating to Mass Spectrometry | |
GB1147651A (en) | Improvements in or relating to mass spectrometers and mass spectrometry |