No abstract available

[en] The features of ENDF/B-V with respect to fission yields are described. Yields for approximately 1100 nuclides are given for each of 11 fissioning nuclides at one or more fission-neutron energies, plus the yield uncertainties. Selected chain yields and uncertainties are illustrated. Aspects of the evaluation process are discussed. 4 figures, 3 tables

[en] Abstract only

[en] Approaches to estimate yields of nuclei far from stability from targets bombarded by high-energy protons are evaluated against available data. The production processes considered include spallation, fragmentation, and fission (the latter with a uranium target). Approaches and mass regions with good predictive properties are highlighted, as well as those exhibiting poor predictive power

[en] This document lists chronologically and alphabetically by event name all nuclear tests conducted and announced by the United States from July 1945 through December 1981, with the exception of the GMX experiments. The 22 GMX experiments, conducted at the Nevada Test Site (NTS) between December 1954 and February 1956, were equation-of-state physics studies that use small chemical explosives and small quantities of plutonium. Several tests conducted during Operation Dominic involved missile launches from Johnston Atoll. Several of these missile launches were aborted, resulting in the destruction of the missile and nuclear device either on the pad or in the air. Data on United States tests were obtained from and verified by the Department of Energy's three weapons laboratories - Los Alamos National Laboratory, Los Alamos, New Mexico; Lawrence Livermore National Laboratory, Livermore, California; and Sandia National Laboratories, Albuquerque, New Mexico. Additionally, data were obtained from public announcements issued by the Atomic Energy Commission and its successors, the Energy Research and Development Administration and the Department of Energy, respectively. The data tabulated gives the name, data, location, type, purpose, and yield of each event

[en] A computized system for simulation and optimizaton of the experiments for fission products yields measurements is described. In the course of simulating the shape of the apparatus the gamma-ray spectrum is calculated, thus providing the experimenter with means for experiment planning and optimization

[en] A new evaluation has been prepared of the independent and cumulative yields of the products of fission induced by thermal, fast, and 14 MeV neutrons in nuclides important for reactor design and operation and for fuel and waste management. Three spontaneously fissioning nuclides were also considered. The evaluation used a database that is considered to be complete up to early 1989. Careful study was made of experimental uncertainties and discrepancies, emphasizing the need for further measurements. Gaps in the data were filled by interpolation and extrapolation using fits to empirical models. The yields were subsequently adjusted to fit physical constraints of the fissioning process. The present report describes the methods used in the evaluation, and includes numerous graphs that illustrate the quality of the data. (author)

No abstract available

[en] We develop a model for pair-breaking in order to explain the behavior of the even-odd effects displayed both by the fragment yields and the fragments' kinetic energies in low energy nuclear fission. Neutron and proton pair breaking are taken into account. Two pair-breaking mechanisms are considered. In the first, pairs are broken at the saddle point and the individual members of the broken pairs are assumed to localise independently in the fragments. In the second, pairs are broken at scission and individual members of the broken pairs are assumed to end in different fission fragments. With this simple model all existing experimental data can be explained, including results of cold-fragmentation. (orig.)

[en] The 1986 UK request list for chemical nuclear data has been reviewed in detail by members of the UK Chemical Nuclear Data Committee. New requirements for data measurements and evaluations have been identified, and specific requests have been withdrawn. A new UK request list has evolved, and is given in the form of tabulations covering measurements and evaluations. (author)