Optical pumping of metastable NH radicals into the paramagnetic ground state

Meerakker, Sebastiaan Y. T. van de; Sartakov, Boris G.; Mosk, Allard P.; Jongma, Rienk T.; Meijer, Gerard

doi:10.1103/PhysRevA.68.032508

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Optical pumping of metastable NH radicals into the paramagnetic ground state

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Meijer, Gerard
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Meerakker, S. Y. T. v. d., Sartakov, B. G., Mosk, A. P., Jongma, R. T., & Meijer, G. (2003). Optical pumping of metastable NH radicals into the paramagnetic ground state. Physical Review A, 68(3): 032508. doi:10.1103/PhysRevA.68.032508.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-0F09-C

Abstract

We here report on the optical pumping of both 14NH and 15NH radicals from the metastable a 1 state into the X 3– ground state in a molecular beam experiment. By inducing the hitherto unobserved spin-forbidden A 3a 1 transition, followed by spontaneous emission to the X 3– state, a unidirectional pathway for population transfer from the metastable state into the electronic ground state is obtained. The optical pumping scheme demonstrated here opens up the possibility to accumulate NH radicals in a magnetic or optical trap.