RF quadrupole systems with potential gradients

Details RF quadrupole systems with potential gradients RF quadrupole systems with potential gradients

2007-01-16

2007-01-16

Berman, Jack I. (Department: 2881)

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

Reexamination Certificate

active

11090316

ABSTRACT:
The invention relates to two-dimensional quadrupole systems along whose axis an axial DC field is superimposed. The invention involves coating the hyperbolic or cylindrical surfaces of quadrupole systems with thin insulating layers and metal films thereupon and generating axial potential gradients or saddle ramps using appropriate electrical supply of DC potentials and superimposed RF voltages to the metal films. Systems of this type can be used in a plurality of ways, ranging from mass filters with high transmission to fragmentation cells with extremely low ion losses.

REFERENCES:
patent: 3233098 (1966-02-01), Reich
patent: 3334225 (1967-08-01), Langmuir
patent: 3699330 (1972-10-01), McGinnis
patent: 4213557 (1980-07-01), Franzen et al.
patent: 4963736 (1990-10-01), Douglas et al.
patent: 5572035 (1996-11-01), Franzen
patent: 5847386 (1998-12-01), Thomson et al.
patent: 5852302 (1998-12-01), Hiraishi et al.
patent: 7064322 (2006-06-01), Crawford et al.
patent: 2006/0169890 (2006-08-01), Crawford et al.
patent: 0 817 239 (2003-06-01), None
patent: WO 97/07530 (1997-02-01), None
Performance of the Quadrupole Mass Filter With Separated RF and DC Fringing Fields; P.H. Dawson; Division of Physics, National Research Council, Ottawa, KIA OR6 (Canada); Apr. 18, 1977, pp. 375-393.
Über nichtlineare Resonanzen im elektrischen Massenfilter als Folge von Feldfehlern, F. v. Busch and W, Paul Zeitschrift für Physik 164,588-594 (1961).

Affiliated with

Also associated with

Rating

RF quadrupole systems with potential gradients does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with RF quadrupole systems with potential gradients, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and RF quadrupole systems with potential gradients will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3765229