Low energy collision: Difference between revisions

Revision as of 16:10, 17 January 2006

Low energy collision
DRAFT DEFINITION
A collision between an ion and neutral species with translational energy approximately 1000 eV or lower.
Considered between 2004 and 2006 but not included in the 2006 PAC submission
This is an unofficial draft definition presented for information and comment. Recommended terms \| Full list of terms

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-Low-energy collisions are typical in the 1-1000 [[eV]] range and occur in [[quadrupole]]s, [[ion trap]]s and [[Hybrid Mass Spectrometer|hybrid instruments]].  The ion excitation is mainly vibrational and the choice of the collision gas is much more important than for [[High Energy Collision|high-energy collisions]]. For low energy collisions heavier gases are preferred since the energy transfer is greater which in turn leads to more fragmentation.
+A collision between an ion and neutral species with translational energy approximately 1000 eV or lower.
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