The isotope selectivity of the strontium (Sr) magneto-optical trap (MOT) is measured by a time-of-flight (TOF) mass spectrometer. The thermally generated Sr atoms are slowed down by the Zeeman slowing technique and trapped by the magneto-optical method. The trapped atoms are photoionized by the nonresonant two-photon ionization, and the generated ions are analyzed by the TOF mass spectrometer. The isotope selectivity of the MOT is up to approximately 2000 for <sup>86</sup>Sr, and the overall selectivity of the system, which consists of the MOT and the mass spectrometer is also discussed.
© 2006 Optical Society of America
Atomic and Molecular Physics
Original Manuscript: March 6, 2006
Revised Manuscript: June 20, 2006
Manuscript Accepted: August 8, 2006
Kwang-Hoon Ko, You-Kyoung Lim, Do-Young Jeong, Hyunmin Park, Taek-Soo Kim, Gwon Lim, and Hyung Ki Cha, "Measurement of the isotope selectivity of the strontium magneto-optical trap by a time-of-flight mass spectrometer," J. Opt. Soc. Am. B 23, 2465-2469 (2006)