JPS5688249A - Mass spectrograph - Google Patents

Mass spectrograph

Info

Publication number
JPS5688249A
JPS5688249A JP16604579A JP16604579A JPS5688249A JP S5688249 A JPS5688249 A JP S5688249A JP 16604579 A JP16604579 A JP 16604579A JP 16604579 A JP16604579 A JP 16604579A JP S5688249 A JPS5688249 A JP S5688249A
Authority
JP
Japan
Prior art keywords
attenuators
converter
computer
sweep signals
fed
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.)
Granted
Application number
JP16604579A
Other languages
Japanese (ja)
Other versions
JPS5914861B2 (en
Inventor
Toru Asada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jeol Ltd
Original Assignee
Jeol Ltd
Nihon Denshi KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jeol Ltd, Nihon Denshi KK filed Critical Jeol Ltd
Priority to JP54166045A priority Critical patent/JPS5914861B2/en
Publication of JPS5688249A publication Critical patent/JPS5688249A/en
Publication of JPS5914861B2 publication Critical patent/JPS5914861B2/en
Expired legal-status Critical Current

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

Abstract

PURPOSE:To improve the accuracy of mass number sweep with a computer by providing attenuators to reduce output of a D/A converter which transmits sweep signals and a means to add a variable DC voltage on the output of the attenuators. CONSTITUTION:Ions generated from an ion source 1 are allowed to pass through an electric field formed between electrodes 2, 2', dispersed with a magnetic device 3 depending on ratios of mass-electric charge, and are detected with a detector 4. The detecting signal is transferred and treated in a computer 7 through an amplifier 5 and A/D converter 6. The computer 7 generates digital sweep signals which increase gradually, the digital sweep signals are transferred to a D/A converter 8, and are fed into an adder 11 directly or through attenuators 9, 10 together with a DC voltage, and after addition, fed into a magnetic field controlling device 15 or an accelerating source 16.
JP54166045A 1979-12-20 1979-12-20 mass spectrometer Expired JPS5914861B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54166045A JPS5914861B2 (en) 1979-12-20 1979-12-20 mass spectrometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54166045A JPS5914861B2 (en) 1979-12-20 1979-12-20 mass spectrometer

Publications (2)

Publication Number Publication Date
JPS5688249A true JPS5688249A (en) 1981-07-17
JPS5914861B2 JPS5914861B2 (en) 1984-04-06

Family

ID=15823923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54166045A Expired JPS5914861B2 (en) 1979-12-20 1979-12-20 mass spectrometer

Country Status (1)

Country Link
JP (1) JPS5914861B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999349A (en) * 1982-11-30 1984-06-08 Shimadzu Corp Magnetic field setting apparatus for mass spectrometer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999349A (en) * 1982-11-30 1984-06-08 Shimadzu Corp Magnetic field setting apparatus for mass spectrometer
JPH0332745B2 (en) * 1982-11-30 1991-05-14 Shimadzu Corp

Also Published As

Publication number Publication date
JPS5914861B2 (en) 1984-04-06

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