The nucleus 203Fr has been studied through γ -ray and electron spectroscopy, using the recoil-decay taggingtechnique. A 13/2+ state, with a half-life of 0.37(5) μs, has been observed in 203Fr. Both the α-decay branch andthe internal de-excitation of the 1/2+ isomer in 203Fr have been studied. Furthermore, the corresponding 1/2+state, with a half-life of 0.31(8) s, has been found in 199At. In addition, transitions feeding the 9/2− ground stateof 203Fr have been identified. The observed level pattern suggests that the ground state is still spherical.
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