Phys. Rev. Lett. 101, 252502 (2008) [4 pages]Masses and Charge Radii of 17–22Ne and the Two-Proton-Halo Candidate 17NeReceived 27 June 2008; published 19 December 2008 High-precision mass and charge radius measurements on 17–22Ne, including the proton-halo candidate 17Ne, have been performed with Penning trap mass spectrometry and collinear laser spectroscopy. The 17Ne mass uncertainty is improved by factor 50, and the charge radii of 17–19Ne 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 17Ne to an extended proton configuration with an s2 component of about 40%. In 18Ne the smaller radius is due to a significantly smaller s2 component. The radii increase again for 19–22Ne due to cluster admixtures. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.252502
DOI:
10.1103/PhysRevLett.101.252502
PACS:
21.10.Ft, 21.10.Dr, 27.20.+n, 31.30.Gs
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