Arnold, E × Bonn, J Klein, A Neugart, R Neuroth, M Otten, EW Lievens, Peter Reich, H Widdra, W #
Elsevier science bv
Physics Letters B vol:281 issue:1-2 pages:16-19
The quadrupole coupling constants of Li-11 and Li-9 in LiNbO3 have been measured by beta-NMR spectroscopy on implanted lithium nuclei. These were polarized by optical pumping on a fast beam of neutral atoms. The deduced ratio of quadrupole moments, \Q(Li-11)/Q(Li-9)\ = 1.14(16), is in accordance with the current models describing the Li-11 nucleus as being clustered into a Li-9 core and a halo of two loosely bound neutrons.