Trace Element Analysis of Potassium by Resonance Ionization Mass Spectrometry

Details Trace Element Analysis of Potassium by Resonance Ionization Mass Spectrometry Trace Element Analysis of Potassium by Resonance Ionization Mass Spectrometry

2008-08-29

arxiv.org/abs/0808.4020v2

Physics

Atomic Physics

14 pages, 9 figures, submitted to JJAP

Scientific paper

A simple resonance ionization mass spectrometer is built with a Quadrupole Mass Spectrometer (QMS) and two laser diodes aiming at trace analysis of potassium. The overall detection efficiency is estimated comparing the yields of resonance ionization and electron-impact ionization in the same QMS. A clear discrimination of $^{39}\rm K$, $^{40}\rm K$ and $^{41}\rm K$ is demonstrated with a help of isotope shifts of the atomic levels.

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