High Rydberg resonances in dielectronic recombination of pb(79+).
Dielectronic recombination resonances of Pb (79+) associated with 2s(1/2)-->2p(1/2) excitations were measured at the heavy-ion storage ring ESR at GSI. The fine structure of the energetically lowest resonance manifold Pb (78+)(1s(2)2p(1/2)20l(j)) at around 18 eV could partially be resolved, and rate coefficients on an absolute scale were obtained. A comparison of the experimental data with results of a fully relativistic theoretical approach shows that high-angular-momentum components up to j=31/2 significantly contribute to the total resonance strength demonstrating the necessity to revise the widespread notion of negligible high-angular-momentum contributions at least for very highly charged ions.
Brandau
C
C
Institut für Kernphysik, Justus-Liebig-Universität, D-35392 Giessen, Germany.
Bartsch
T
T
Hoffknecht
A
A
Knopp
H
H
Schippers
S
S
Shi
W
W
Müller
A
A
Grün
N
N
Scheid
W
W
Steih
T
T
Bosch
F
F
Franzke
B
B
Kozhuharov
C
C
Mokler
P H
PH
Nolden
F
F
Steck
M
M
Stöhlker
T
T
Stachura
Z
Z