Abstract
We have implemented a technique for precision mass comparison of two ions trapped simultaneously in a Penning trap in which each ion is alternately positioned at the center of the trap - where the cyclotron frequency is measured - and in a large cyclotron "parking" orbit. Systematic shifts in the cyclotron frequency ratio have been studied by comparing 13C2H2+/14N2+ and 14N2+/28Si+. Using the method to compare 28SiH3+/31P+ we have obtained a new atomic mass for 31P, M[31P] = 30.973 761 999 7 (61) u.
Original language | English |
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Pages (from-to) | 125-130 |
Number of pages | 6 |
Journal | International Journal of Mass Spectrometry |
Volume | 251 |
Issue number | 2-3 SPEC. ISS. |
DOIs | |
State | Published - Apr 1 2006 |
Keywords
- Atomic mass
- Penning trap
- Precision measurement