Kinetic Energy of Trapped Ions Cooled by Buffer Gas
CHEN Liang1,2,3, SHE Lei1,2, LI Jiao-Mei1,2, GAO Ke-Lin1,2
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 2Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071 3Graduate School of the Chinese Academy of Sciences, Beijing 100049
Kinetic Energy of Trapped Ions Cooled by Buffer Gas
CHEN Liang1,2,3, SHE Lei1,2, LI Jiao-Mei1,2, GAO Ke-Lin1,2
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 2Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071 3Graduate School of the Chinese Academy of Sciences, Beijing 100049
The average kinetic energy of 40Ca+ ions is measured by the method of evaporating ions in an rf ion trap. The kinetic energy of the ion 40Ca+ varies from 0.5 eV to 0.2 eV with changing buffer gas pressure from 10-7 mbar to 10-5 mbar. The Brownian motion model is also introduced to calculate the average kinetic energy of the trapped ions.
The average kinetic energy of 40Ca+ ions is measured by the method of evaporating ions in an rf ion trap. The kinetic energy of the ion 40Ca+ varies from 0.5 eV to 0.2 eV with changing buffer gas pressure from 10-7 mbar to 10-5 mbar. The Brownian motion model is also introduced to calculate the average kinetic energy of the trapped ions.
[1] Ghosh P K 1995 Ion Traps (Oxford: Clarendon) [2] Prestage J D, Dick G L and Maleki L 1992 IEEE Trans. Instrum. Meas. 40 132 [3] Prasad S R, Sevugarajan S, Vikram A S, Paul J and Dnyaneshwar G 2003 Paul Trap Mass Spectrometers (Bangalore: Indian Institute of Science) [4] Cirac J I and Zoller P 1995 Phys. Rev. Lett. 74 4091 [5] Itano W M, Bergquist J C, Bollinger J J and Wineland D J 1995 Physica Scripta T59 106 [6] Goeringer D E and Mcluckey S A 1996 J. Chem. Phys. 104 2214 [7] She L, Wang W M, Bai L, Sun H Y, Zhu X W, Li J M and Gao K L 2008 Chin. Phys. Lett. 25 1653 [8] Major F G and Dehmelt H G 1968 Phys. Rev. 170 91 [9] Schaaf H, Schmeling U and Werth G 1981 Appl. Phys. 25 249 [10] Moriwaki Y, Tachikawa M, Maeno Y and Shimizu T 1992 Jpn. J. Appl. Phys. 31 L1640 [11] Vedel F, André J, Vedel M and Brincourt G 1983 Phys. Rev. A 27 2321 [12] Vedel F and Vedel M 1992 J. Mod. Opt. 39 431 [13] Lunney M D N, Buchinger F and Moore R B 1992 J. Mod. Opt. 39 349 [14] Cutler L S, Flory C A, Giffard R P and McGuire M D 1986 Appl. Phys. B 39 251 [15] Dehmelt H G 1967 Adv. Atom. Mol. Phys. 3 53 [16] Church D 1988 Phys. Rev. A 37 277 [17] Mikosch J, Fruhling U, Trippel S, Schwalm D, Weidemuller M and Wester R 2007 Phys. Rev. Lett. 98 223001 [18] Blatt R, Zoller P, Holzmuller G and Siemers I 1986 Z. Phys. D 4 121 [19] Gao K L, Nie Z X, Jiang Y R and Li J M 2003 Phys. Rev. A 67 022702 [20] Church D A and Dehmelt H G 1969 J. Appl. Phys. 40 3421 [21] Blumel R, Kappler C, Quint W and Walther H 1989 Phys. Rev. A 40 808 [22] March R E and Todd J F J 1989 Chemical Analysis Series: Quadrupole Ion Trap Mass Spectrometry (New Jersey: John Wiley) vol 165 p 88
2010, Vol. 27 
