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Experimental fusion excitation functions and derived barrier distributions for heavy ion systems involving prolate and oblate target nuclei

Description: Fusion excitation functions spanning the entire barrier region in 1 MeV energy steps for the two systems {sup 40}Ca + {sup 192}Os, {sup 194}Pt are presented. The results of fission fragment angular distribution measurements for fusion-fission of {sup 40}Ca + {sup 197}Au at several projectile energies within the barrier region are also presented. The fusion data is of high enough precision to allow for extraction of the distribution of fusion barriers from the second differential of the product of E and {sigma}. Basic coupled channels calculations which are in quite good agreement with the data are shown and discussed.
Date: July 1, 1996
Creator: Bierman, J.D.; Chan, P.; Liang, J.F.; Kelly, M.P.; Sonzogni, A.A. & Vandenbosch, R.
Partner: UNT Libraries Government Documents Department

Tests of supersymmetries with the (n,. gamma. ) reaction

Description: The characteristics of the SU(3) and 0(6) boson-fermion symmetries stemming from a U(6/12) group structure are discussed and compared with recent results of (n,..gamma..) studies in the W-Pt region. The nuclei /sup 185/W and /sup 195/Pt are shown to represent the best empirical examples of the SU(3) and O(6) limits, respectively, and it is also shown that the consistent Q formalism can be extended to the odd A Hamiltonian to describe the transition between these two limits. Preliminary comparisons with the low lying structure of the odd Os nuclei are presented. The question of the empirical evidence for supersymmetry in this region is also discussed. 23 references.
Date: January 1, 1984
Creator: Warner, D.D.
Partner: UNT Libraries Government Documents Department

Few-nucleon transfer reactions on deformed nuclei

Description: Recent developments discussed include: alpha-transfer reactions on deformed nuclei, quasi-elastic neutron transfer reactions induced by /sup 58/Ni beams on spherical and deformed samarium nuclei, and the population of low-lying states in neutron rich nuclei using (particle,..gamma..) or (particle,e) coincidence methods. 37 refs., 10 figs. (LEW)
Date: January 1, 1985
Creator: van den Berg, A.M.
Partner: UNT Libraries Government Documents Department

/sup 194/ /sup 196/ /sup 198/Pt(t,. cap alpha. )/sup 193/ /sup 195/ /sup 197/Ir reactions with polarized tritons. [17 MeV]

Description: The /sup 194/ /sup 196/ /sup 198/Pt(t vector, ..cap alpha..)/sup 193/ /sup 195/ /sup 197/Ir reactions were measured. Angular distributions of cross sections and analyzing powers for levels up to approx. 2.5 MeV in each residual nuclide were obtained, and comparisons with DWBA predictions allowed spins, parities, and pickup spectroscopic strengths to be determined. The results are being analyzed with the aim of testing the existence of supersymmmetric structures in nature. 2 figures.
Date: January 1, 1980
Creator: Cizewski, J.A.; Flynn, E.R.; Sunier, J.W.; Brown, R.E. & Burke, D.G.
Partner: UNT Libraries Government Documents Department