Statistical Properties of Nuclei : Proceedings of the International Conference on Statistical Properties of Nuclei, Held at Albany, New York, August 23–27, 1971

An International Conference on the "Statistical Properties of Nuclei" was held from August 23 to August 27, 1971, at the State University of New York at Albany campus. The purpose of the conference was to review the current status of the experimental and theoretical aspects of resonance reaction theories, statistics of resonance parameters such as level spacings, neutron, fission, radiative and reaction widths, level densities, fluctuations in cross sections, strength functions and its relation to the optical model, intermediate structure in particle and photon induced reactions, and statistical aspects of the decay of the compound nucleus. The conference was held under the auspices of the Inter­ national Union of Pure and Applied Physics. The organization of the conference was greatly facilitated by the financial support received from the International Union of Pure and Applied Physics, The National Science Foundation and the U.S. Atomic Energy Commission and the generous use of the physical facilities and other audio-visual services provided by the State University of New York. It is with great pleasure that I thank all tbese agencies for their kind support. Front Matter....Pages i-xxx Front Matter....Pages 1-1 Welcome Address....Pages 3-6 Introductory Talk....Pages 7-23 Survey of Resonance Reaction Theories....Pages 25-44 Unitary Parametrization of Nuclear Reactions....Pages 45-51 Front Matter....Pages 53-53 High Resolution Neutron Cross Sections....Pages 55-79 High-Resolution Neutron Resonance Spectroscopy in Natural Fluorine, Aluminum, Chlorine and Potassium....Pages 81-90 Comparison of Feshbach and R-Matrix Reaction Theories for 12 C(n,n) 12 C....Pages 91-97 High Resolution Proton Resonance Reactions....Pages 99-120 Nuclear Spectroscopy Utilizing an (Alpha, Nucleon) Resonance Reaction....Pages 121-127 Front Matter....Pages 129-129 Fluctuations in Charged Particle Cross Sections....Pages 131-138 Coherence Widths in Highly Excited Compound Nuclei....Pages 139-148 Distribution of Neutron and Fission Widths....Pages 149-177 Level Spacings, Correlation Functions and Statistics....Pages 179-194 Some Properties of Level Spacing Distributions....Pages 195-204 Recent Experimental Neutron Resonance Spectroscopy Results as a Test of Statistical Theories of Short and Long Range Order for Level Spacings....Pages 205-213 Deviations from the Statistical Description of Neutron Level Spacing Distributions and Stabilizing Effects of Nuclear Shells in Positions of Nuclear Excited States....Pages 215-229 Front Matter....Pages 231-231 The Measurement of Radiative Capture Widths....Pages 233-249 Investigation of the Capture Gamma-Ray Spectra for Individual Resonances in the 169 Tm(n, γ) Reaction....Pages 251-256 Decay Properties of Nuclear Levels Populated by the (γ, γ′) Reaction....Pages 257-262 The 5.5 MeV Anomalous Gamma Radiation in 205 Tl(n,γ) 206 Tl....Pages 263-270 Front Matter....Pages 231-231 Correlations between Partial Widths of Different Channels....Pages 271-289 In Search of Non-statistical Effects in Neutron Capture....Pages 291-298 Channel Correlation Effects for Fragmented Analog States....Pages 299-306 Front Matter....Pages 307-307 Strength Functions and Intermediate Structure....Pages 309-325 Average Total Neutron Cross Sections of Heavy Elements at 2.7 keV....Pages 327-334 Resonance Parameters and the Optical Model....Pages 335-350 Compound Nucleus Effects in 24 Mg+α Elastic Scattering at 20–23 MeV....Pages 351-358 Structure in the (n, n′) Gross Sections of Se Isotopes....Pages 359-365 S- and P-Wave Strength Functions and the Spin, Isospin and Spin-Orbit Dependence of the Optical Potential....Pages 367-375 Front Matter....Pages 377-377 A Survey of Nuclear Level Density Theories....Pages 379-403 Distribution Theory of Nuclear Level Densities and Related Quantities....Pages 405-424 Experimental and Theoretical Nuclear Level Densities....Pages 425-445 J-Dependence of Level Density in 180 Hf and 178 Hf from Statistical Properties of Series of Resonances with Assigned Spin....Pages 447-454 Fluctuation Analysis of Total Neutron Cross Sections....Pages 455-461 Front Matter....Pages 463-463 Evaporation Spectra....Pages 465-481 Yields of K Isomer, Beta, and Ground Bands in Yb (α, xn γ) 174 Hf Reactions....Pages 483-487 Products of the Reaction 12 C + 209 Bi....Pages 489-495 Yrast Trapping in Heavy Ion Compound Nucleus Reactions....Pages 497-504 The Role of Angular Momentum and Isobaric Spin in Tests of the Independence Hypothesis....Pages 505-525 Compound Nucleus Reactions between Oxygen Ions and 18 O, 12 C, and 14 C Targets....Pages 527-534 Front Matter....Pages 463-463 Compound Nuclear Lifetimes from Blocking Experiments in Ge and Mo....Pages 535-542 Front Matter....Pages 543-543 Intermediate Structure....Pages 545-562 Evidence for Intermediate Structure Near an Isobaric Analogue Resonance....Pages 563-572 Intermediate Structures in the Neutron Scattering Cross Sections of Iron....Pages 573-578 1/2 + Particle-Vibration Doorways in Compound Nuclei Pb 209 and Pb 207 ....Pages 579-587 Intermediate Structure in Photon Induced Reactions....Pages 589-600 Ground-State Radiation Widths for Resonant States in 57 Fe....Pages 601-610 Threshold Photoneutrons and Photon Doorways....Pages 611-617 Front Matter....Pages 619-619 Round Table Discussion....Pages 621-647 Back Matter....Pages 649-665