H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 49/42 (2006.01) H01J 49/14 (2006.01)
Patent
CA 2123931
A variable cooling time is imposed on ions in a quadrupole ion trap prior to excitation through border effect operation. Continuous variation of the cooling time brings about continuous variation of the selected ion internal energy when subjected to the boundary effect such that the boundary effect competes more favorably with ion loss in the trap, and fragmentation reaction channels having successively greater energies of activation can be accessed preferentially.
Catinella Silvia
Londry Frank A.
March Raymond E.
R. William Wray & Associates
Varian Inc.
Varian Associates Inc.
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