Polarized Proton Scattering at 134 Mev from Deformed Rare Earth Nuclei

This work was supported by the National Science Foundation Grants NSF PHY 78-22774 A03, NSF PHY 81-14339, and by Indiana Universit

Polarized Proton Scattering at 134 MeV from 154-Sm and 166-Er

This work was supported by the National Science Foundation Grant NSF PHY 81-14339 and by Indiana Universit

Evaporation residue cross sections and average neutron multiplicities in the 64Ni+92Zr and 12C+144Sm reactions leading to 156Er

Evaporation residue cross sections and neutron multiplicity distributions have been measured for the 12C + 144Sm and 64Ni + 92Zr reactions leading to the same compound nucleous 156Er. Statistical model calculations can account for the data in the 12C-induced reaction. In contrast, the inhibition of neutron emission with respect to statistical model predictions seen in 64Ni + 92Zr cannot be explained even with the inclusion of the broad angular momentum distributions required to describe the fusion cross section data

RADIATION DAMAGE TO BSCCO-2223 FROM 50 MEV PROTONS

The use of HTS materials in high radiation environments requires that the superconducting properties remain constant up to a radiation high dose. BSCCO-2223 samples from two manufacturers were irradiated with 50 MeV protons at fluences of up to 5 x 1017 protons/cm2. The samples lost approximately 75 percent of their pre-irradiation Ic. This compares with Nb3Sn, which loses about 50 percent at the same displacements per atom

Suppression of neutron emission after heavy-ion fusion: is shape relaxation affected by a superdeformed minimum ?

Neutron spectra as a function of spin and the neutron multiplicity distribution have been measured for the reaction 233-MeV Ni64 + Zr92. The emission of two neutrons constitutes the strongest decay channel, in contrast to statistical-model calculations which predict the emission of three neutrons to be the strongest by more than one order of magnitude. This is possibly due to trapping in a superdeformed potential well, similar to that giving rise to fission isomers, as the compound nucleus relaxes from the highly distorted initial shape