Talk:Quadrupole ion trap

From Wikipedia, the free encyclopedia

	Portal This article is within the scope of WikiProject Physics, which collaborates on articles related to physics.
Start	This article has been rated as Start-Class on the assessment scale.
???	This article has not yet received an importance rating within physics.
Help with this template This article has been rated but has no comments. If appropriate, please review the article and leave comments here to identify the strengths and weaknesses of the article and what work it will need.

	Quadrupole ion trap is part of WikiProject Mass spectrometry, which collaborates on Mass spectrometry and related subjects on Wikipedia. To participate, help improve this article or visit the project page for details on the project.
Start	This article has been rated as Start-Class on the quality scale.
High	This article has been rated as High-importance on the importance scale.
Comments	Please leave a short summary to explain the ratings and to identify the strengths and weaknesses of the article.

[edit] WikiProject class rating

This article was automatically assessed because at least one WikiProject had rated the article as start, and the rating on other projects was brought up to start class. BetacommandBot 10:02, 10 November 2007 (UTC)

[edit] Saddles?

Shouldn't this article contain explanation of saddle potential and how Earnshaw theorem means you can't create a potential minimum. So saddle potential is used and effectively spun to keep ion in trap. —Preceding unsigned comment added by 138.251.248.238 (talk) 16:47, 4 January 2008 (UTC)

[edit] Equations of motion

I started a new section following the discussion in March, R (1997). "An Introduction to Quadrupole Ion Trap Mass Spectrometry" (PDF). J Mass Spectrom 32 (4): 351-369. . A discussion of mass selective instability, etc. is still needed. --Kkmurray (talk) 20:15, 6 May 2008 (UTC)