29454387
Lifetimes of the decay from superdeformed to normal deformed in 135Nd.
Lifetimes of low-spin members of the superdeformed band in [sup 135]Nd have been determined by the Doppler-shift recoil-distance method. We find a quadrupole moment of 7.2[sub [minus]1.5][sup +1.2] b for the 677 keV (37/2- 33) / 2 transition in the band, confirming the large deformation previously measured by the Doppler-shift attenuation method. However, the quadrupole moment for the 620 keV transition deexciting the 3.324 MeV (25/2) state at the bottom of the band is much smaller. We conclude that the superdeformed potential-energy minimum disappears or the band drastically changes character at this point which causes the sudden depopulation.
115819581
Shears bands in Pb-193
Four bands of enhanced dipole transitions, with weak crossovers, have been observed in Pb-195. Three of these bands are connected to the spherical levels. in addition, the spherical level scheme ha ...
103381576
High-spin state spectroscopy of Dy-143
118964632
ONSET OF COLLECTIVITY IN NEUTRON-DEFICIENT PO-196,PO-198
We have studied via in-beam gamma-ray spectroscopy Po-196 and Po-198, which are the first neutron-deficient Po isotopes to exhibit a collective low-lying structure. The ratios of yrast state energi ...
104250414
High-spin state spectroscopy in Tb-143
54770513
O18+Pd110: Measurements and realistic coupled-channel analysis in a transitional region
The inelastic, two-neutron and \ensuremath{\alpha} transfer and quasielastic cross sections for the $^{18}\mathrm{O}+^{110}\mathrm{Pd}$ system have been measured in the near barrier region (40 MeV $\ensuremath{\leqslant}{E}_{\mathrm{lab}}\ensuremath{\leqslant}58$ MeV). The experiments were performed in the S\~ao Paulo Pelletron laboratory. Coupled-channel analysis of the experimental data was performed using the S\~ao Paulo potential as a microscopic bare interaction. In the calculations, low-lying inelastic excitations, one- and two-neutron and \ensuremath{\alpha} transfers to the target were considered as the main couplings, with no extra surface absorption. The agreement between the theoretical results and the experimental data is good. The role played by the coupled channels is very different in comparison with similar data analyses for the closed-shell region around $^{58}\mathrm{Ni}$.
6299473
Soft covariant gauges on the lattice.
We present an exploratory study of a one-parameter family of covariant, nonperturbative lattice gauge-fixing conditions that can be implemented through a simple Monte Carlo algorithm. We demonstrate that at the numerical level the procedure is feasible, and as a first application we examine the gauge dependence of the gluon propagator. {copyright} {ital 1996 The American Physical Society.}