Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Reexamination Certificate
2003-10-28
2008-09-23
Berman, Jack I (Department: 2881)
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
C250S282000
Reexamination Certificate
active
07427752
ABSTRACT:
A magnetic sector mass spectrometer is disclosed comprising an ion detector (11) wherein a reflecting electrode (13) is used to divide an ion beam in the direction of mass dispersion into two separate ion beams. The two ion beams are directed onto two detectors which preferably comprise two or more conversion dynodes (15a,15b) and two or more corresponding microchannel plate detectors (14a,14b) to detect electrons produced by the conversion dynodes (15a,15b). If the signal from the two detectors differs substantially then the ion beam can be determined to include interference ions. Conversely, if the signal from the two detectors is substantially the same then the ion beam can be determined to be substantially free from interference ions.
REFERENCES:
patent: 3770337 (1973-11-01), Merren
patent: 4524275 (1985-06-01), Cottrell et al.
patent: 4672204 (1987-06-01), Slodzian et al.
patent: 4896035 (1990-01-01), Mahoney et al.
patent: 5202561 (1993-04-01), Glessmann et al.
patent: 5220167 (1993-06-01), Brown et al.
patent: 5471059 (1995-11-01), Freedman et al.
patent: 199 53 300 (2000-05-01), None
patent: 196 35 645 (2000-12-01), None
patent: 0 551 999 (1993-07-01), None
patent: 0 611 169 (1994-02-01), None
patent: 1 339 089 (1999-04-01), None
patent: 2 829 287 (2001-09-01), None
Saxton, J. M. et al: “The Manchester Isolab 54 ion microprobe” Elsevier Scientific Publishing Co., vol. 154, No. 1, (May 31, 1996), pp. 99-131.
Bateman Robert Harold
Jones Gareth Rhys
Berman Jack I
Janiuk Anthony J.
Micromass UK Limited
Rose Jamie H.
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