The transition probability for the ${3\mathrm{d}}^{45}$${\mathrm{D}}_2$${\leftarrow }^5$${\mathrm{D}}_3$ magnetic-dipole transition in Ti-like Xe (${\mathrm{Xe}}^{32+}$) has been measured using an electron-beam ion trap. The unusually weak dependence of the transition energy on nuclear charge Z, and the fact that the transition wavelength remains in the 320- to 400-nm range for 54${\mathrm{s}}^{\mathrm{-}1}$, corresponding to a lifetime of 2.15(14) ms, in good agreement with the theoretical value of 2.4 ms.

• Received 21 January 1996

DOI:https://doi.org/10.1103/PhysRevA.55.4196