Masses and charge radii of 17-22Ne and the two-proton-halo candidate 17Ne.
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.
Geithner
W
W
Institut für Physik, Johannes Gutenberg-Universität, 55099 Mainz, Germany.
Neff
T
T
Audi
G
G
Blaum
K
K
Delahaye
P
P
Feldmeier
H
H
George
S
S
Guénaut
C
C
Herfurth
F
F
Herlert
A
A
Kappertz
S
S
Keim
M
M
Kellerbauer
A
A
Kluge
H-J
HJ
Kowalska
M
M
Lievens
P
P
Lunney
D
D
Marinova
K
K
Neugart
R
R
Schweikhard
L
L
Wilbert
S
S
Yazidjian
C
C