Decay of the 0[sub 2][sup +] state in [sup 80]Kr

The electric monopole strength [rho][sup 2] for the 0[sub 2][sup +][r arrow]0[sub 1][sup +] transition and the [ital B]([ital E]2) value for the 0[sub 2][sup +][r arrow]2[sub 1][sup +] transition were deduced from internal electron conversion and [gamma]-ray spectroscopy and from the measurement of the lifetime of the 0[sub 2][sup +] state, performed by means of the Doppler shift attenuation method in gases. In addition, an upper limit was deduced for the [ital E]0 component of the 2[sub 2][sup +][r arrow]2[sub 1][sup +] transition. The available spectroscopic data on low-lying positive parity levels in [sup 78,80,82]Kr are compared to the predictions of the interacting boson model (IBM-2).