![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/8/84/Jeol_5sector.jpg/640px-Jeol_5sector.jpg&w=640&q=50)
Sector mass spectrometer
Class of mass spectrometer / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Sector mass spectrometer?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
This article is about mass spectrometers. For sector compasses, see sector (instrument).
A sector instrument is a general term for a class of mass spectrometer that uses a static electric (E) or magnetic (B) sector or some combination of the two (separately in space) as a mass analyzer.[1] Popular combinations of these sectors have been the EB, BE (of so-called reverse geometry), three-sector BEB and four-sector EBEB (electric-magnetic-electric-magnetic) instruments. Most modern sector instruments are double-focusing instruments (first developed by Francis William Aston, Arthur Jeffrey Dempster, Kenneth Bainbridge and Josef Mattauch in 1936[2]) in that they focus the ion beams both in direction and velocity.[3]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/8/84/Jeol_5sector.jpg/320px-Jeol_5sector.jpg)