Radiant energy – Ionic separation or analysis – With evacuation or sealing means
Patent
1975-11-21
1976-12-07
Church, Craig E.
Radiant energy
Ionic separation or analysis
With evacuation or sealing means
250298, H01J 3934
Patent
active
039964647
ABSTRACT:
A mass spectrometer (MS) with unique magnetic pole pieces which provide a homogenous magnetic field across the gap of the MS magnetic sector as well as the magnetic field across an ion-type vacuum pump is disclosed. The pole pieces form the top and bottom sides of a housing. The housing is positioned so that portions of the pole pieces form part of the magnetic sector with the space between them defining the gap region of the magnetic sector, through which an ion beam passes. The pole pieces extend beyond the magnetic sector with the space between them being large enough to accommodate the electrical parts of an ion-type vacuum pump. The pole pieces which provide the magnetic field for the pump, together with the housing form the vacuum pump enclosure or housing.
REFERENCES:
patent: 3479504 (1969-11-01), Hull
Fletcher James C. Administrator of the National Aeronautics and Space
Giffin Charles E.
Nier Alfred O.
Sieradski Leonard M.
Church Craig E.
Grifka Wilfred
Manning John R.
Mott Monte F.
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