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A new route has been investigated for the production of the  81 Rb( 81  m Kr) generator parent radionuclide at low energy cyclotrons. The excitation function of the  80 Kr(d,n)  81 Rb reaction was measured up to 14 MeV using natural Kr gas as target, the activation method and a stacked gas-cell irradiation technique. The saturation yield of  81 Rb over the energy range E d  = 14 → 6 MeV amounts to 2.86 GBq/μA. A comparison of this production method with the commonly used  82 Kr(p,2n)  81 Rb route is given.

Possibility of production of 81 Rb via the 80 Kr(d,n) reaction at a small cyclotron