Magnetic Dipole Transition in Atomic Ytterbium

نویسندگان

  • Jason E. Stalnaker
  • Dmitry Budker
چکیده

We present the results of an ongoing investigation designed to measure the forbidden magnetic dipole transition amplitude for the 6s2 S0 → 6s5d D1 transition (408 nm) in atomic ytterbium. The transition is excited in an effusive atiomic beam with a C.W. laser in the presence of crossed D.C. electric and magnetic fields. The fields are arranged to provide interference between the magnetic dipole transition and a Stark-induced transition caused by the electric field. This interference term is separated from the larger Stark-induced transition by switching the direction of the electric field. The transition is observed through fluorescence in the 6s6p P1 → 6s2 S0 decay channel at 556 nm. Preliminary measurements allow us to place an upper limit on the 6s2 S0 → 6s5d D1 magnetic dipole amplitude of M1 < 3 × 10−3 μB .

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تاریخ انتشار 1999