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Optical isotope shifts of146Sm and151Sm |
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| Authors: | D. A. Eastham P. M. Walker J. A. R. Griffith D. E. Evans J. G. England I. S. Grant |
| Affiliation: | 1. Institut de Physique Nucléaire, B.P. n° 1, F-91406, Orsay Cedex, France 3. Physique Nucléaire Expérimentale, Université Libre de Bruxelles, Belgium 4. G. A. N. I. L., BP 5027, F-14021, Caen Cedex, France |
| Abstract: | We have measured the optical isotope shifts of146Sm and151Sm by laser resonance fluorescence. From these measurements the changes in the mean square nuclear radii are: Δ〈r2〉 (A=144 to 146)=0.266(10) fm2, and Δ〈r2〉 (A=151 to 152)=0.262(10) fm2. These results, together with those of the stable isotopes, show that the average nuclear expansion of samarium can be accounted for by the liquid drop model with deformations. |
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