GB1145132A - Mass spectrometers - Google Patents
Mass spectrometersInfo
- Publication number
- GB1145132A GB1145132A GB3688366A GB3688366A GB1145132A GB 1145132 A GB1145132 A GB 1145132A GB 3688366 A GB3688366 A GB 3688366A GB 3688366 A GB3688366 A GB 3688366A GB 1145132 A GB1145132 A GB 1145132A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ions
- trajectory
- field
- magnetic
- mass
- 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
- H01J49/10—Ion sources; Ion guns
- H01J49/14—Ion sources; Ion guns using particle bombardment, e.g. ionisation chambers
-
- 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)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
1,145,132. Mass spectrometers. VARIAN ASSOCIATES. 17 Aug., 1966, No. 36883/66. Heading H1D. In a dual orbit magnetic mass spectrometer ions of mass range 1 to 10 and ions of mass range 10 to 100 follow respective trajectories 28 and 27 and are collected simultaneously at collectors 44 and 36 when the accelerator voltage is swept from 1,000 to 100 volts, the magnetic polepieces being so shaped that ions in each trajectory enter and leave the field at 90 degrees to the field boundary. As shown the polepieces 22 have semi-circular disc-like terminations 37 towards the ion source 13. The radius of curvature of the trajectory 28 for the lighter ions is smaller by a factor of #10= 3À16 than the radius of curvature of the trajectory 27 for the heavier ions, and the deflection arcs are respectively 120 and 135 degrees. The ion source 13 is of the electron beam bombardment type employing a flat electron stream which is collimated by the fringing field of the spectrometer magnet and a mesh grid electrode between the ionization chamber and the ion accelerator electrode. Suitable dimensions and spacings and voltage values and values of magnetic field strength are given.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3688366A GB1145132A (en) | 1966-08-17 | 1966-08-17 | Mass spectrometers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3688366A GB1145132A (en) | 1966-08-17 | 1966-08-17 | Mass spectrometers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1145132A true GB1145132A (en) | 1969-03-12 |
Family
ID=10391952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3688366A Expired GB1145132A (en) | 1966-08-17 | 1966-08-17 | Mass spectrometers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1145132A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016509341A (en) * | 2013-01-11 | 2016-03-24 | ルクセンブルク インスティチュート オブ サイエンス アンド テクノロジー（エルアイエスティー） | Mass spectrometer with improved magnetic sector |
-
1966
- 1966-08-17 GB GB3688366A patent/GB1145132A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016509341A (en) * | 2013-01-11 | 2016-03-24 | ルクセンブルク インスティチュート オブ サイエンス アンド テクノロジー（エルアイエスティー） | Mass spectrometer with improved magnetic sector |
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