Session L1: Poster Session II (4:00 pm - 6:00 pm)
4:00 PM–4:00 PM, Wednesday, June 15, 2011
Room: Atrium Ballroom BC
Abstract ID: BAPS.2011.DAMOP.L1.129
Abstract: L1.00129 : Observations of Bound and Resonance States of Ce$^{- }$
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Abstract 
Authors:
C.W. Walter
Y.-G. Li
D.J. Matyas
R.M. Alton
S.E. Lou
R.L. Field III
N.D. Gibson
(Denison University, Granville, OH)
D. Hanstorp
(University of Gothenburg, Sweden)
The negative ion of cerium has been investigated with tunable infrared laser photodetachment spectroscopy. The relative cross section for neutral atom production was measured with a crossed laser-ion beam apparatus over selected photon energy ranges between 0.56 -- 0.7 eV. The spectrum reveals several sharp peaks due to negative ion resonances and possible bound-bound transitions in Ce$^{-}$. The newly observed transitions, together with our previous measurements [1], provide insight into the rich near-threshold spectrum of this lanthanide negative ion.\\[4pt] [1] C.W. Walter, N.D. Gibson, C. M. Janczak, K.A. Starr, A.P. Snedden, R.L. Field III, and P. Andersson, \textit{Physical Review A }\textbf{76}, 052702 (2007).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.DAMOP.L1.129