JPS5688250A - Mass spectrograph - Google Patents

Mass spectrograph

Info

Publication number
JPS5688250A
JPS5688250A JP16604679A JP16604679A JPS5688250A JP S5688250 A JPS5688250 A JP S5688250A JP 16604679 A JP16604679 A JP 16604679A JP 16604679 A JP16604679 A JP 16604679A JP S5688250 A JPS5688250 A JP S5688250A
Authority
JP
Japan
Prior art keywords
mass number
magnetic field
width
field intensity
central 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.)
Pending
Application number
JP16604679A
Other languages
Japanese (ja)
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.)
NIPPON ELECTRON OPTICS LAB
Jeol Ltd
Original Assignee
NIPPON ELECTRON OPTICS LAB
Jeol Ltd
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 NIPPON ELECTRON OPTICS LAB, Jeol Ltd filed Critical NIPPON ELECTRON OPTICS LAB
Priority to JP16604679A priority Critical patent/JPS5688250A/en
Publication of JPS5688250A publication Critical patent/JPS5688250A/en
Pending 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
    • H01J49/26—Mass spectrometers or separator tubes
    • H01J49/28—Static spectrometers
    • H01J49/30—Static spectrometers using magnetic analysers, e.g. Dempster spectrometer

Abstract

PURPOSE:To keep the mass number width of the spectrum independently of the center of mass number by utilization of information about the magnetic field intensity to change the ion accelerating voltage sweep width automatically. CONSTITUTION:A DC souce 10 generates a magnetic field intensity signal which corresponds to the magnetic field intensity B1 to give central mass M1, an exciting source 8 generates a magnetic field intensity signal which corresponds to the magnetic field intensity B2 to give central mass number M2 set at that time, and an atutenator 14 is so set that a voltage sweep width DELTAV1 to give a prescribed developed mass number width at the central mass number M1 is drawn out. Outputs of a deviding circuit and squaring circuit become B1/B2 and (B1/B2)<2> respectively, an output of a multiplier 12 DELTAV2 becomes (B1/B2)<2>DELTAV1, and the developed mass number width is maintained at equal value of the width at the central mass number M1 even when the magnetic field B2 is changed optionally and the central mass number M2 is set at an optional value.
JP16604679A 1979-12-20 1979-12-20 Mass spectrograph Pending JPS5688250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16604679A JPS5688250A (en) 1979-12-20 1979-12-20 Mass spectrograph

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16604679A JPS5688250A (en) 1979-12-20 1979-12-20 Mass spectrograph

Publications (1)

Publication Number Publication Date
JPS5688250A true JPS5688250A (en) 1981-07-17

Family

ID=15823945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16604679A Pending JPS5688250A (en) 1979-12-20 1979-12-20 Mass spectrograph

Country Status (1)

Country Link
JP (1) JPS5688250A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0227650A (en) * 1988-07-15 1990-01-30 Jeol Ltd Ms/ms device
JPH0497502U (en) * 1991-01-21 1992-08-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0227650A (en) * 1988-07-15 1990-01-30 Jeol Ltd Ms/ms device
JPH0497502U (en) * 1991-01-21 1992-08-24

Similar Documents

Publication Publication Date Title
JPS5278052A (en) Switching regulator
JPS51144267A (en) Electronic clock
JPS5688250A (en) Mass spectrograph
JPS5343537A (en) Corona charger
JPS51119287A (en) Recutangular-shape beam ion source
JPS5638761A (en) Setting of magnetic field in mass spectrometer
JPS5628458A (en) Atomic spectrum generating lamp
JPS5224567A (en) Ampere measuring apparatus
JPS5341124A (en) Parametric power source circuit
JPS5439567A (en) Electromagnetic lens
JPS52104973A (en) Direct phase comparison circuit
JPS5241829A (en) Inverter apparatus
JPS5418029A (en) Transformer system
JPS5243329A (en) Bias magnetic field adjustment mechanism
JPS5437223A (en) All wave rectifying circuit
JPS5210042A (en) Level transforming circuit
JPS52164A (en) Magnetron
JPS5228657A (en) Constant voltage circuit
JPS5221641A (en) Constant-voltage circuit
JPS5238975A (en) Power factor detection circuit
JPS5383054A (en) Switching type stabilized power unit
JPS5314319A (en) Power source circuit
JPS52115618A (en) Reference signal generator
JPS5357941A (en) Multiplier using hall element
JPS5352185A (en) Measuring apparatus of ion electric current