The new neutron deficient nuclide Rn-195 and the nuclide Rn-196 have been p
roduced in fusion evaporation reactions using Fe-56 ions on Nd-142 targets.
A gas-filled recoil separator was used to separate the fusion products fro
m the scattered beam. The activities were implanted in a position sensitive
silicon detector. The isotopes were identified using spatial and time corr
elations between implants and decays. Two alpha decaying isomeric states, w
ith E-alpha = 7536(11) keV [T-1/2 = (6(-2)(+3)) ms] for the ground state an
d E-alpha = 7555(11) keV [T-1/2 = (5(-2)(+3)) ms] for an isomeric state wer
e identified in 195Rn. In addition, the half-life and alpha decay energy of
Rn-196 were measured with improved precision. The reduced widths deduced f
or the neutron deficient even-mass Rn isotopes suggest an onset of substant
ial deformation at N = 110.