Statistical Properties of Nuclei -

. .

Résumé :
.

Sommaire:
I Introductory Session.- Welcome Address.- Introductory Talk.- Survey of Resonance Reaction Theories.- Unitary Parametrization of Nuclear Reactions.- II Analysis of Resonance Reaction Experiments.- High Resolution Neutron Cross Sections.- High Resolution Neutron Resonance Spectroscopy in Natural Fluorine, Aluminum, Chlorine, and Potassium.- Comparison of Feshbach and R-Matrix Reaction Theories for 12C(n,n)12C.- High Resolution Proton Resonance Reactions.- Nuclear Spectroscopy Utilizing an (Alpha, Nucleon) Resonance Reaction.- III Statistics of Resonance Parameters (Part I).- Fluctuation in Charged Particle Cross Sections.- Coherence Widths in Highly Excited Compound Nuclei.- Distribution of Neutron and Fission Widths.- Level Spacings, Correlation Functions and Statistics.- Some Properties of Level Spacing Distributions.- Recent Experimental Neutron Resonance Spectroscopy Results as a Test of Statistical Theories of Short and Long Range Order for Level Spacing.- Deviations from the Statistical Description of Neutron Level Spacing Distributions and Stabilizing Effects of Nuclear Shells in Positions of Nuclear Excited States.- IV Statistics of Resonance Parameters (Part II).- Measurement of Radiative Capture Widths.- Investigation of the Capture Gamma-Ray Spectra for Individual Resonances in the 169Tm(n,y) Reaction.- Decay Properties of Nuclear Levels Populated by the (?,??) Reaction.- The 5.5 MeV Anomalous Radiation in 205Tl (n,?)206Tl.- Correlations between Partial Widths of Different Channels.- In Search of Non-statistical Effects in Neutron Capture.- Channel Correlation Effects for Fragmented Analog States.- V Average Resonance Parameters.- Strength Functions and Intermediate Structure.- Average Total Neutron Cross Sections of Heavy Elements at 2.7 keV.- Resonance Parameters and the Optical Model.- Compound Nucleus Effects in 24Mg + ? Elastic Scattering at 20-23 MeV.- Structure in the (n,n?) Cross-Sections of Se Isotopes.- S- and P- Wave Strength Functions and the Spin, Isospin and Spin-Orbit Dependence of the Optical Potential.- VI Nuclear Level Density.- A Survey of Nuclear Level Density Theories.- Distribution Theory of Nuclear Level Density and Related Quantities.- Experimental and Theoretical Nuclear Level Densities.- J-Dependence of Level Density in 180Hf and 178Hf from Statistical Properties of Series of Resonances with Assigned Spin.- Fluctuation Analysis of Total Neutron Cross Sections.- VII Decay of the Compound Nucleus.- Evaporation Spectra.- Yields of the K Isomer, Beta, and Ground Bands in Yb(?, xn?) 174Hf Reactions.- Products of the Reaction 12C + 209Bi.- Yrast Trapping in Heavy Ion Compound Nucleus Reactions.- The Role of Angular Momentum and Isobaric Spin in Tests of the Independence Hypothesis.- Compound Nucleus Reactions between Oxygen Ions and 18O, 12C, and 14C Targets.- Compound Nuclear Lifetimes from Blocking Experiments in Ge and Mo.- VIII Limitations of the Compound Nucleus.- Intermediate Structure.- Evidence for Intermediate Structure near an Isobaric Analogue Resonance.- Intermediate Structures in the Neutron Scattering Cross Sections of Iron.- 1/2+ Particle-Vibration Doorways in Compound Nuclei Pb209 and Pb207.- Intermediate Structure in Photon Induced Reactions.- Ground-State Radiation Widths for Resonant States in 57Fe.- Threshold Photoneutrons and Photon Doorways.- XI Conclusion of the Conference Round Table Discussion of Selected Topics.- Discussion.- ELEMENT INDEX.- LIST OF CONTRIBUTED PAPERS.