Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Reexamination Certificate
2007-03-20
2007-03-20
Vanore, David (Department: 2881)
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
C250S282000
Reexamination Certificate
active
10089963
ABSTRACT:
A digital drive apparatus (FIG.3) for quadrupole device such as a quadrupole ion trap has a digital signal generator (11, 13, 14; 24, 25, 26) and a switching arrangement (16, 17) which alternately switches between high and low voltage levels (V1, V2) to generate a rectangular wave drive voltage. A dipole excitation voltage is also supplied to the quadrupole device to excite resonant oscillatory motion of ions.
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Ding Li
Nuttall James Edward
Leydig , Voit & Mayer, Ltd.
Shimadzu Research (Europe) Ltd.
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