title: Masses and charge radii of 17-22Ne and the two-proton-halo candidate 17Ne.
abstract: High-precision mass and charge radius measurements on ;{17-22}Ne, 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 ;{17-19}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 17Ne to an extended proton configuration with an s;{2} component of about 40%. In 18Ne the smaller radius is due to a significantly smaller s;{2} component. The radii increase again for ;{19-22}Ne due to cluster admixtures.
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität, 55099 Mainz, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Geithner
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authors.initials: T
authors.lastname: Neff
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authors.lastname: Audi
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authors.lastname: Blaum
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authors.lastname: Delahaye
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authors.lastname: Feldmeier
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authors.lastname: George
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authors.lastname: Guénaut
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authors.initials: F
authors.lastname: Herfurth
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authors.lastname: Herlert
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authors.initials: S
authors.lastname: Kappertz
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authors.lastname: Keim
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authors.lastname: Kellerbauer
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authors.lastname: Kluge
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authors.lastname: Kowalska
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authors.lastname: Lievens
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authors.lastname: Lunney
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authors.lastname: Marinova
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authors.lastname: Neugart
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authors.initials: L
authors.lastname: Schweikhard
authors.forename: S
authors.initials: S
authors.lastname: Wilbert
authors.forename: C
authors.initials: C
authors.lastname: Yazidjian