[en] ²⁰⁶Fr and ²⁰⁸Fr were mass separated and observed with large-volume semiconductor detectors in calibrated geometries. Alpha, gamma, and electron singles and gamma-gamma and gamma-electron coincidence data were taken. The alpha decay experiments permitted the determination of the alpha branching ratios for ²⁰⁶²⁰⁸Fr as well as ²⁰⁵²⁰⁷Fr. The method used includes the information obtained from the electron capture decay studies of those nuclei. The alpha branching ratios obtained are generally higher than those reported previously. Energies and half-lives are in general agreement with previous measurements. The alpha measurements also revealed the presence of a heretofore unobserved alpha-emitting isomer in ²⁰⁶Fr. The isomer has a half-life of 0.7 +- 0.1 seconds, and the energy of the associated alpha decay is 6.930 +- 0.005 MeV. Gamma data taken with the alpha measurements suggest that the isomeric level is 531 keV above the ²⁰⁶Fr ground state, with the associated alpha decay populating a level at 391 keV in the ²⁰²At nucleus. Measured alpha branching ratios were analyzed with the Rasmussen reduced width formalism. All observed francium decays were deduced to be unhindered. This study produced detailed level schemes for ²⁰⁶Rn and ²⁰⁸Rn. The gamma and electron data permitted the determination of internal conversion coefficients, multipolarities, spins, and parities. It appears from systematics that two different bands of states above J/sup π/ = 4+ are populated by in-beam studies. The deduced level scheme of ²⁰⁸Rn was studied in the interacting boson approximation (IBA) with the computer code PHINT. The level scheme is readily explained with this model up to around 2 MeV. Good agreement between theory and experiment was also obtained for ²⁰⁴Rn and ²⁰⁶Rn, but the limited detail in these decay schemes does not provide conclusive evidence for the applicability of the IBA. 28 figures, 10 tables

[en] Separate abstracts were prepared for individual papers in this conference proceedings. Topics include: complementary probes in nuclear physics, microscopic approaches to hadronic interactions, quark/gluon phenomena in nuclear physics, advocacy talks for approaches to quark/gluon phenomena, meson production in nuclei, future facilities for nuclear physics

[en] Measurements have been made for 65 MeV Positive pion, incident on an enriched target of with emphasis on determining cross sections for the excitation of the 1.74 MeV 0⁺ state. The experiment was performed at the Clinton P. Anderson Meson Physics Facility (LAMPF) Low Energy Pion channel using the Clamshell spectrometer and the SCRUNCHER. Measurements were made for laboratory scattering angles of 65, 80, and 100 degrees. ¹¹B measurements won made to subtract the background arising from the ¹¹B content of the enriched target. A missing man resolution of about 550 keV was obtained. Preliminary results from the analysis of the data for the cross sections will be presented. Comparison with results at resonance energies will be presented

[en] An overview of the current design of the CEBAF Hall B Bremsstrahlung Photon Tagging Spectrometer is given. Elements of the system are described separately, followed by a summary of anticipated capabilities during the first round of experiments. A list of institutions participating in the working group designing and constructing the tagger is also presented

No abstract available

[en] We present preliminary data for the T and F asymmetries in η photoproduction from the proton, along with comparisons to theoretical predictions. The data used in the present analysis were taken using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab, a cryogenic target which utilized transversely polarized protons in a butanol target, and incident tagged photons with energy between 0.62 and 2.93 GeV. (author)

[en] An attempt is made to clarify some of the areas of disagreement concerning recent distorted-wave impulse approximation calculations of the sup12C(πsup+,2p) reaction. In the absence of detailed exclusive data, it is argued that the identification of the broad ''background'' reported remains uncertain

[en] The parametrizations developed by Spuller and Measday for the energy dependence of the total cross section for πd→pp, which have been used to normalize some πd→pp angular distributions, are reviewed in light of high accuracy data taken since 1975. Slight modifications of the parameters of the earlier analysis yield significant improvement in the agreement with the newer data. A simpler parametrization which fits the data equally well is suggested for absolute normalizations of relative angular distributions for the process

[en] Angular distributions have been measured for π^+- elastic scattering at 50 MeV from ¹⁴C. Comparison with previously measured distributions for ¹²C shows a significant isotopic difference for π^- scattering. The data were analyzed using the second order Michigan State University optical potential proposed for low energy pion nucleus elastic scattering. Agreement with the data was obtained using the same density distributions for the protons and neutrons

[en] A coupled channels analysis of data from previous work on proton scattering from ¹²C at 0.8 and 1.0 GeV is presented. Calculations were performed in which the 0⁺,2⁺, and 4⁺ states were assumed to belong to the ground state rotational band. A deformed Woods-Saxon optical potential, with and without spin-orbit terms, was adjusted to fit the data. The multipole moments of the deformed optical potentials are related to those of the matter distributions by Satchler's theorem. Although the various values of the moments obtained here from the (p,p') data agree in sign and are approximately the same in magnitude, the values are consistently smaller for ME(2) and ME(4) than those obtained from (e,e') and from Hartree-Fock calculations