Masses and Charge Radii ofNe17–22and the Two-Proton-Halo CandidateNe17
| Autor: | G. Audi, Magda Kowalska, P. Lievens, H. Feldmeier, Frank Herfurth, D. Lunney, K. Marinova, M. Keim, Alban Kellerbauer, Hans-Jürgen Kluge, Klaus Blaum, S. Kappertz, T. Neff, Sebastian George, W. Geithner, Alexander Herlert, R. Neugart, S. Wilbert, C. Yazidjian, Lutz Schweikhard, C. Guénaut, P. Delahaye |
|---|---|
| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Physical Review Letters. 101 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.101.252502 |
| Popis: | High-precision mass and charge radius measurements on $^{17--22}\mathrm{Ne}$, including the proton-halo candidate $^{17}\mathrm{Ne}$, have been performed with Penning trap mass spectrometry and collinear laser spectroscopy. The $^{17}\mathrm{Ne}$ mass uncertainty is improved by factor 50, and the charge radii of $^{17--19}\mathrm{Ne}$ are determined for the first time. The fermionic molecular dynamics model explains the pronounced changes in the ground-state structure. It attributes the large charge radius of $^{17}\mathrm{Ne}$ to an extended proton configuration with an ${s}^{2}$ component of about 40%. In $^{18}\mathrm{Ne}$ the smaller radius is due to a significantly smaller ${s}^{2}$ component. The radii increase again for $^{19--22}\mathrm{Ne}$ due to cluster admixtures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|