Atlas of Neutron Resonances: Resonance Properties and Thermal Cross Sections Z=61-102, Sixth Edition, contains an extensive list of detailed individual neutron resonance parameters for Z=61-102, thermal cross sections, capture and fission resonance integrals, average resonance parameters, and a short survey of the physics of thermal and resonance neutrons. The long introduction contains: nuclear physics formulas aimed at neutron physicists; topics of special interest such as valence neutron capture, nuclear level density parameters, and s-, p-, and d-wave neutron strength functions; and various comparisons of measured quantities with the predictions of nuclear models, such as the optical model neutron-induced fission. As in the last edition, additional features have been added to appeal to a wider spectrum of users. These include: spin-dependent scattering lengths that are of interest to solid-state physicists, nuclear physicists and neutron evaluators; calculated and measured Maxwellian average 5-keV and 30-keV capture cross sections of importance to astrophysicists involved in nucleosynthesis modeling; s-, p-, and d- wave average radiative widths; nuclear level density parameters; and average fission widths derived from average fission cross sections. Provides a comparison of average resonance parameters with optical model calculations and with the generalized Landau-Fermi model - Presents scattering radii for various partial waves from the analysis of total neutron cross sections in the keV to MeV energy region - Includes a brief review of sub-threshold fission - Features consistent treatment of average neutron parameters with values from the resolved resonance region This fully revised Sixth Edition provides extensive data on individual neutron resonance properties, thermal cross sections and average parameters The Atlas of Neutron Resonances , Volume 2, contains an extensive list of detailed individual neutron resonance parameters for Z=61-102, as well as thermal cross sections, capture and fission resonance integrals, average resonance parameters, as well as a short survey of the physics of thermal and resonance neutrons. The long introduction contains: Nuclear physics formulas aimed at neutron physicists; Topics of special interest such as valence neutron capture, nuclear level density parameters, and s-, p-, and d-wave neutron strength functions; Various comparisons of measured quantities with the predictions of nuclear models, such as the optical model.; Neutron- induced fission. As in the last edition, additional features have been added to appeal to a wider spectrum of users. These include (1) spin-dependent scattering lengths that are of interest to solid -state physicists, nuclear physicists, and neutron evaluators, (2) calculated and measured Maxwellian average 5-keV and 30-keV capture cross sections of importance to astrophysicists involved in nucleosynthesis modeling, (3) s- p- and d- wave average radiative widths, (4) nuclear level density parameters, and (5) average fission widths derived from average fission cross sections. The various evaluated neutron strength functions, as well as the scattering radii, are compared with optical model predictions. Extensive applications of the Porter-Thomas distribution, coupled with Bayesian analysis, were made to determine the parity and spacings of neutron resonances. This 6th edition differs from all previous editions in that average cross sections in the keV - MeV regions were least-squared fitted to derive additional average resonance parameters. Since 1954, previous editions of "Neutron Cross Sections" have been widely used, extensively cited, and were a prime resource which satisfied the needs of the casual and serious users of neutron cross sections, as well as experimental and theoretical investigators interested in this rich field. Dr. Mughabghab joined Brookhaven National Laboratory in 1963 to carry out neutron research at the Graphite Reactor and later at the High Flux beam Reactor. This was followed by the compilation and evaluation of neutron data at the National Nuclear Data Center. The latter activity resulted in the publications of the well-known BNL-325 reports and Neutron Cross Sections, Volume 1 (4th edition) published by Academic Press (1966-1984); these compendia are frequently referenced in the scientific literature. The former investigations culminated in the findings of non-statistical effects and valence neutron capture in the thermal and resonance neutrons. These activities resulted in collaborative work with physicists at Oak Ridge National Laboratory, Chalk River Nuclear Laboratories, and Harwell. Due to interest in these investigations, the author received international invitations to speak at conferences and neutron schools held at Budapest, Petten, Bologna, Dubna, Bulgaria, and Pruhonice. In the period 1986-1994, the author was involved in the design of a small-size reactor to be utilized in nuclear propulsion