Evaporation of buffer-gas-thermalized anions out of a multipole rf ion trap

• Published in: Physical review letters Vol. 98; no. 22; p. 223001
• Main Authors: Mikosch, J, Frühling, U, Trippel, S, Schwalm, D, Weidemüller, M, Wester, R
• Format: Journal Article
• Language: English
• Published: United States 01.06.2007

We identify plain evaporation of ions as the fundamental loss mechanism out of a multipole ion trap. Using thermalized negative Cl- ions we find that the evaporative loss rate is proportional to a Boltzmann factor. This thermodynamic description allows us to extract the effective depth of the ion tr...