a. Explain the purpose of the collision cell in Figure 21-28.
b. Determination of 28Si 28Si ,< experiences isobaric interference from 14N2+ 14N⁺₂ and background silicon leached from glass components.45 What effect would kinetic energy discrimination have on these two interference signals?

Figure 21-28

Transcribed Image Text:

Sampling Skimmer Cune Cune Plasma 000 DAVANT 000 Torch High-voltage extraction lens 1 bar 10 bar ↓ To To Electrostatic collimator (ion optics) 10 bar To vacuum vacuum vacuum pump pump pump He or NH, in Quadrupole collision cell or dynamic reaction coll Deflector plates lon path Photon path Quadrupole mass separator 10⁰ bar To vacuum pump Electrostatic deflector plates lon path Dotcotor Photon path