JPS5546421A - Mass spectrometer - Google Patents
Mass spectrometerInfo
- Publication number
- JPS5546421A JPS5546421A JP11935178A JP11935178A JPS5546421A JP S5546421 A JPS5546421 A JP S5546421A JP 11935178 A JP11935178 A JP 11935178A JP 11935178 A JP11935178 A JP 11935178A JP S5546421 A JPS5546421 A JP S5546421A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- sensitivity
- electric field
- comparator
- signal generator
- 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.)
- Pending
Links
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Electron Tubes For Measurement (AREA)
Abstract
PURPOSE: To make the spectrum correctly obtainable automatically in a required sensitivity, by means of changing a sensitivity of ion detection system to a preset value in the method of comparison between electric field intensity and preset value.
CONSTITUTION: In the mass spectrometer, which is made so as to sweep the electric field with an ion source 1, electric field 2, magnetic field 4, secondary electron multiplier 6, recorder 8, magnetic field current controller 9, magnetic field detector 10, electric field voltage generator 11 and gain converter 12 comprised, are provided a comparator 13, sensitivity selecting signal generator 14 and programmer 15. With a work of link sweeping started, an output voltage of the field detector 10 is also fed to the comparator 13, and compared witha voltage set for sensitivity changing, with a signal fed to the sensitivity selecting signal generator 14 at the time of the voltage coinciding, and the signal generator 14 changes a gain by switching a supply voltage to the secondary electron multiplier 6 or input resistance of DC amlifier 7. The programmer 15 makes a setting of the voltage at the next switching point to the comparator 13.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11935178A JPS5546421A (en) | 1978-09-29 | 1978-09-29 | Mass spectrometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11935178A JPS5546421A (en) | 1978-09-29 | 1978-09-29 | Mass spectrometer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5546421A true JPS5546421A (en) | 1980-04-01 |
Family
ID=14759330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11935178A Pending JPS5546421A (en) | 1978-09-29 | 1978-09-29 | Mass spectrometer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5546421A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6193546A (en) * | 1984-10-13 | 1986-05-12 | Jeol Ltd | Energy analyzer |
-
1978
- 1978-09-29 JP JP11935178A patent/JPS5546421A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6193546A (en) * | 1984-10-13 | 1986-05-12 | Jeol Ltd | Energy analyzer |
JPH0358143B2 (en) * | 1984-10-13 | 1991-09-04 | Nippon Electron Optics Lab |
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