Attempted Coulomb excitation of the spontaneous-fission isomeric state inPu239

Abstract
Attempts to Coulomb excite the 8.5 μsec spontaneous-fission isomeric state in Pu239 with 100- and 117-MeV Ne20 ions have led to negative results. A cross section upper limit of 3.2 × 1034 cm2, integrated over Ne20 laboratory scattering angles 90° → 180°, was determined.