![Lifetime measurement of the
<i>a</i>
<sup>4</sup>
Π
<sub/><i>u</i>
</sub>
metastable state of O
<sub/>2</sub><sup>+</sup>
using an electrostatic ion storage ring]()
Lifetime measurement of the
<i>a</i>
<sup>4</sup>
Π
<sub/><i>u</i>
</sub>
metastable state of O
<sub/>2</sub><sup>+</sup>
using an electrostatic ion storage ringMajima, T; Hanada, K; Kawaguchi, E; Goto, M; Matsumoto, J; Shiromaru, H; Tanuma, H; Azuma, T · Journal of Physics: Conference Series · 2009