Vibrational state distribution of 2-Na^+ ions created in ultracold collisions
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Publication date
1997-01-01
Authors
Blangé, J.J.
Zijlstra, J.M.
Amelink, A.
Urbain, X.
Rudolph, H.
Straten, P. van der
Heideman, H.G.M.
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Abstract
The vibrational distribution P(v) of 2-Na^+ ions created in
ultracold collisions in a magneto-optical trap has been deter-
mined. Only two vibrational states with v = 2 and 3 are popu-
lated and we find P(2)=0.29±0.02 and P(3)=0.71±0.02. The
results provide conclusive evidence that the ionization mech-
anism is photo-associative autoionization,and not photo-
associative photoionization and will form a fundamental test
for the theoretical description of the process.