Early onset of ground-state deformation in the neutron-deficient polonium isotopes
| Autor: | Cocolios, T. E., Dexters, W., Seliverstov, M. D., Andreyev, A. N., Antalic, S., Barzakh, A. E., Bastin, B., Buscher, J., Darby, I. G., Fedorov, D. V., Fedosseyev, V. N., Flanagan, K. T., Franchoo, S., Fritzsche, S., Huber, G., Huyse, M., Keupers, M., Koster, U., Kudryavtsev, Yu., Mane, E., Marsh, B. A., Molkanov, P. L., Page, R. D., Sjoedin, A. M., Stefan, I., Van de Walle, J., Van Duppen, P., Venhart, M., Zemlyanoy, S. G., Bender, M., Heenen, P. -H. |
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| Rok vydání: | 2010 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.106.052503 |
| Popis: | In-source resonant ionization laser spectroscopy of the even-$A$ polonium isotopes $^{192-210,216,218}$Po has been performed using the $6p^37s$ $^5S_2$ to $6p^37p$ $^5P_2$ ($\lambda=843.38$ nm) transition in the polonium atom (Po-I) at the CERN ISOLDE facility. The comparison of the measured isotope shifts in $^{200-210}$Po with a previous data set allows to test for the first time recent large-scale atomic calculations that are essential to extract the changes in the mean-square charge radius of the atomic nucleus. When going to lighter masses, a surprisingly large and early departure from sphericity is observed, which is only partly reproduced by Beyond Mean Field calculations. Comment: As submitted to PRL |
| Databáze: | arXiv |
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