M. D. Robbins, O. K. Yoon, I. A. Zuleta, G. K. Barbula, and R. N. Zare, “Computer-Controlled, Variable-Frequency Power Supply for Driving Multipole Ion Guides,” Rev. Sci. Instrum. 79, 034702 (2008). M. D. Robbins, O. K. Yoon, I. A. Zuleta, G. K. Barbula, and R. N. Zare, “Computer-Controlled, Variable-Frequency Power Supply for Driving Multipole Ion Guides,” Rev. Sci. Instrum. 79, 034702 (2008).
