Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Patent
1990-01-09
1991-01-15
Berman, Jack I.
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
250290, H01J 4942
Patent
active
049856260
ABSTRACT:
A mass filter for charged particles includes a cylindrical conductive housing at ground potential and an array of linear conductors arranged in parallel in the housing and divided equally into four subarrays. The conductors of each subarray lie in one of four planes having a tubular arrangement with a square cross section on the longitudinal axis of the housing. The conductors have a substantially uniform distribution in the planes. A dedicated voltage is applied to each conductor in each subarray, the voltages being selected cooperatively and with the dimensions of the housing and the square cross section, such that a quadrupole type of electric field is generated within the tubular arrangement. Equations are disclosed for determining the voltages.
REFERENCES:
patent: 2939952 (1960-06-01), Paul et al.
patent: 3129327 (1964-04-01), Brubaker
patent: 3501631 (1970-03-01), Arnold
patent: 3725700 (1973-04-01), Turner
Hua et al., Nuclear Instruments and Methods 167(1979) pp. 101-107.
Jiang, Vacuum Science and Technology 145 (1981) pp. 151-161.
Berman Jack I.
Grimes E. T.
Ingham H. S.
The Perkin-Elmer Corporation
LandOfFree
Quadrupole mass filter for charged particles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Quadrupole mass filter for charged particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quadrupole mass filter for charged particles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-56751