Probing electronic states of Ne2+ and Ar2+ by measuring kinetic-energy-release distributions.
Dissociative decay of metastable, electronically excited neon and argon dimer ions produces fragment ions with strikingly dissimilar kinetic-energy-release distributions. The distributions have been modeled based on ab initio calculations of potential energy curves. The unusual bimodal distribution observed for dissociation of Ne2+ arises from competition between radiative and nonradiative decay of the long-lived II(1/2)(u) state. For Ar2+, however, electronic predissociation is insignificant.
Fedor
J
J
Institut für Ionenphysik, Leopold Franzens Universität, Technikerstrasse 25, A-6020 Innsbruck, Austria.
Parajuli
R
R
Matt-Leubner
S
S
Echt
O
O
Hagelberg
F
F
Głuch
K
K
Stamatovic
A
A
Probst
M
M
Scheier
P
P
Märk
T D
TD