Measuring The D-2(3/2) Ni- Excited State Lifetime In Desiree

K. C. Chartkunchand, O. M. Hole, E. Backstrom,R. F. Nascimento,M. Kaminska, V. T. Davis, P. A. Neill,R. D. Thomas, S. Mannervik,J. S. Thompson,D. Hanstorp,H. T. Schmidt, H. Cederquist

XXIX INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC, AND ATOMIC COLLISIONS (ICPEAC2015), PTS 1-12（2015）

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摘要

Experimental studies of the radiative lifetime of the sole excited state in the nickel anion are presented. Beams of Ni- stored in DESIREE at cryogenic temperatures were subject to photodetachment at different photon energies and the resulting neutrals collected. Preliminary analysis of the decay in neutral production yields a radiative lifetime of approximately 15 seconds for the 3d(9) 4s(2) D-2(3/2) excited state.

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