Energy filter

Details Energy filter Energy filter

1997-12-02

1999-09-14

Westin, Edward P.

Radiant energy

Electron energy analysis

250396ML, 250396R, 250311, G21K 300, G21K 108

Patent

active

059526564

ABSTRACT:
There is disclosed an .OMEGA.-filter for use with an electron microscope. This filter has only one parameter that controls the exciting currents supplied to four magnets M.sub.1 -M.sub.4. Only those electrons of incident electrons that have a given energy pass through the successive magnets and emerge from the filter. The coils of the magnets M.sub.1 and M.sub.4 are identical in number of turns and connected in series. Similarly, the coils of the magnets M.sub.2 and M.sub.3 are identical in number of turns and connected in series. When a human operator specifies an exciting current i.sub.1 through an entry device, a controller causes a power supply P.sub.1 to produce this exciting current i.sub.1, thus exciting the magnets M.sub.1 and M.sub.4. The controller calculates an exciting current i.sub.2 from the exciting current i.sub.1, and causes a power supply P.sub.2 to produce this exciting current i.sub.2, thus exciting the magnets M.sub.2 and M.sub.3.

REFERENCES:
patent: 4740704 (1988-04-01), Rose et al.
patent: 5177361 (1993-01-01), Krahl et al.
patent: 5448063 (1995-09-01), De Jong et al.
patent: 5811801 (1998-09-01), Tsuno

Affiliated with

Also associated with

Rating

Energy 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 Energy filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1512167