Radiant energy – Ionic separation or analysis – Ion beam pulsing means with detector synchronizing means
Reexamination Certificate
2005-09-13
2005-09-13
Lee, John R. (Department: 2881)
Radiant energy
Ionic separation or analysis
Ion beam pulsing means with detector synchronizing means
C250S282000, C250S283000, C250S288000, C250S3960ML, C250S397000
Reexamination Certificate
active
06943344
ABSTRACT:
A method is provided for reducing signal ringing in a microchannel plate detector assembly having a cylindrical mount with a center tube extending through at least a portion of the assembly, in a mass spectrometer including the steps of providing the microchannel plate detector assembly with a pin anode extending from the cylindrical mount and located in proximity to the center tube; holding a front portion of the assembly at ground potential; setting a middle portion of the assembly between the front portion and a rear portion to a first voltage potential for accelerating ions; holding the rear portion of the assembly to a second voltage potential; holding the pin anode at a third voltage potential; and accelerating electrons emitted from the middle portion of the assembly toward the pin anode. The third voltage potential is established by an amplifier of an oscilloscope connected to the detector assembly.
REFERENCES:
patent: 2642535 (1953-06-01), Schroeder
patent: 4731538 (1988-03-01), Gray
patent: 5065018 (1991-11-01), Bechtold et al.
patent: 5374826 (1994-12-01), LaRue et al.
patent: 5510613 (1996-04-01), Reilly et al.
patent: 5614711 (1997-03-01), Li et al.
patent: 5770858 (1998-06-01), Fuchs et al.
patent: 5834771 (1998-11-01), Yoon et al.
patent: 5861623 (1999-01-01), Park
patent: 5994695 (1999-11-01), Young
patent: 6369383 (2002-04-01), Cornish et al.
patent: 2002/0060289 (2002-05-01), Cornish et al.
patent: 2001-176444 (2001-06-01), None
patent: WO 0188951 (2001-11-01), None
patent: WO 01093306 (2001-12-01), None
Cornish Timothy J.
Ecelberger Scott A.
Cooch Francis A.
Hughes James P.
Lee John R.
The Johns Hopkins University
LandOfFree
Microchannel plate detector assembly for a time-of-flight... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microchannel plate detector assembly for a time-of-flight..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microchannel plate detector assembly for a time-of-flight... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3446687