Collision Cooling of Ions Stored in Quadrupole Radio-Frequency Trap
- 1 November 1992
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 31 (11B) , L1640
- https://doi.org/10.1143/jjap.31.l1640
Abstract
We present a novel model for collisional energy transfer between ions and neutral molecules in the quadrupole radio-frequency trap. Calculated results quantitatively reproduce the dependence of the ion temperature T i on the buffer gas pressure P n, observed on Mg+ ions and several collision partners (H2, He, and CH4). It is deduced from the present model that T i is proportional to P n -1/3 in the low-pressure range below 10-6 Torr, in good agreement with the experimental results.Keywords
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