Atmospheric pressure ion source high pass ion filter

Details Atmospheric pressure ion source high pass ion filter Atmospheric pressure ion source high pass ion filter

2006-09-26

2006-09-26

Wells, Nikita (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S282000, C250S290000, C250S291000, C250S3960ML

Reexamination Certificate

active

07112786

ABSTRACT:
For generation and delivery of ions from an ionization chamber through an ion entrance orifice to a mass analyzer operating at high vacuum, high pass ion filtration is effected within the ionization chamber by application of electrical potentials to an electrode associated with the ion entrance orifice and to an electrode between the ionization region and the ion entrance orifice to create a retarding electric field upstream from the ion entrance orifice. The retarding electric field hinders the movement to the ion entrance orifice of ions having drift velocities below a lower limit, and as the retarding voltage gradient is made steeper, the lower limit increases.

REFERENCES:
patent: 5432343 (1995-07-01), Gulcicek et al.
patent: 5747799 (1998-05-01), Franzen
patent: 5825027 (1998-10-01), Takada et al.
patent: 5936242 (1999-08-01), De La Mora et al.
patent: 5998787 (1999-12-01), Hager
patent: 6002130 (1999-12-01), Kato
patent: 6075243 (2000-06-01), Nabeshima et al.
patent: 6465779 (2002-10-01), Takada et al.
patent: 6818890 (2004-11-01), Smith et al.
patent: 2001/0000618 (2001-05-01), Takada et al.
patent: 2002/0014585 (2002-02-01), Takada et al.

Affiliated with

Also associated with

Rating

Atmospheric pressure ion source high pass ion filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Atmospheric pressure ion source high pass ion filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Atmospheric pressure ion source high pass ion filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3526559