Isotope shift in the dielectronic recombination of three-electron ANd57+.
Isotope shifts in dielectronic recombination spectra were studied for Li-like (A)Nd(57+) ions with A=142 and A=150. From the displacement of resonance positions energy shifts deltaE(142 150)(2s-2p(1/2))=40.2(3)(6) meV [(stat)(sys)] and deltaE(142 150)(2s-2p(3/2))=42.3(12)(20) meV of 2s-2p(j) transitions were deduced. An evaluation of these values within a full QED treatment yields a change in the mean-square charge radius of (142 150)deltar(2)=-1.36(1)(3) fm(2). The approach is conceptually new and combines the advantage of a simple atomic structure with high sensitivity to nuclear size.
Brandau
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C
Gesellschaft für Schwerionenforschung (GSI), 64291 Darmstadt, Germany. c.brandau@gsi.de
Kozhuharov
C
C
Harman
Z
Z
Müller
A
A
Schippers
S
S
Kozhedub
Y S
YS
Bernhardt
D
D
Böhm
S
S
Jacobi
J
J
Schmidt
E W
EW
Mokler
P H
PH
Bosch
F
F
Kluge
H-J
HJ
Stöhlker
Th
T
Beckert
K
K
Beller
P
P
Nolden
F
F
Steck
M
M
Gumberidze
A
A
Reuschl
R
R
Spillmann
U
U
Currell
F J
FJ
Tupitsyn
I I
II
Shabaev
V M
VM
Jentschura
U D
UD
Keitel
C H
CH
Wolf
A
A
Stachura
Z
Z