No abstract available

[en] One-dimensional polyacetylene is studied as a model of statistical mechanics. In a semiclassical approximation the system is equivalent to a quantum XY model interacting with unbounded classical spins in one-dimensional lattice space Z. By establishing uniform estimates, an infinite-volume-limit Hilbert space, a strongly continuous time evolution group of unitary operators, and an invariant vector are constructed. Moreover, it is proven that any infinite-limit state satisfies Gibbs conditions. Finally, a modification of Araki's relative entropy method is used to establish the uniqueness of Gibbs states

[en] NUS Corporation was one of six contractors selected under the Program Research and Development Announcement (PRDA) for a nuclear waste packaging and handling design initiative issued by the US Dept. of Energy (DOE). The purpose of this paper is to present the results of the NUS study pertaining to a specific innovation in spent nuclear fuel management - the concept of half-square cans. This particular innovation, when used in appropriate arrays of mixed half- and full-square cans, is compatible with the existing square-geometry storage systems at reactors and has the advantage of reducing disposal system costs through improved utilization of cylindrical-geometry shipping casks and waste disposal packages. The advantages of the half-square can concept are fully realized in conjunction with fuel element disassembly and consolidation. Fuel consolidation approximately doubles the fuel loading of containers and thereby reduces several types of costs. This study shows that disposal system costs tend to be minimized when fuel is transported, stored, and disposed of in consolidated form

[en] We consider the quantum statistical mechanical systems of interacting particles confined to a bounded region LAMBDA of the lattice space Zsup(*n) and of the continuous space Rsup(*n). The models correspond to quantum anharmonic crystals and quantum statistical mechanics for interacting Bose particles. For the class of super-stable and lower regular interactions we obtain apriori estimates such as uniform bounds of local number operators for the systems. The method we use is the Wiener integral formalism in statistical mechanics. Using the apiriori estimates we construct infinite volume (physical) Hilbert spaces, time evolution unitary groups, and space and time translation invariant vectors. (Author)

[en] For space-time regions with finite volumes, the lattice cutoff unnormalized Schwinger functions converge to the (unnormalized) Schwinger functions as the lattice cutoff is removed. (U.S.)

[en] Some μ-e events recently observed in relatively low energy neutrino experiments are analyzed under the assumption that they are due to the production of a neutral heavy leptom. Experiments are compared with predictions of a gauge model based on the Esub(7) group and a SU(2)xU(1) model with both left-handed and right-handed lepton doublets. (Author)

No abstract available

[en] This paper is concerned with amortization of nuclear fuel to expense, and analyzes the impacts of using alternative amortization methods on the nuclear fuel cycle cost, namely, use of a constant cycle-based amortization rate and use of batch-based amortization rates. Results of this comparison are summarized

No abstract available

[en] This paper analyzes rate-regulatory tax, accounting and cost recovery factors, and these analyses lead to the following overall conclusions in connection with decommissioning cost recovery. 1) The internal use of accumulated decommissioning funds is strongly recommended because it results in the lowest net ratepayer cost of decommissioning, and 2) The most equitable decommissioning cost recovery method is based on current costs and on the prompt and continuous maintenance of the purchasing power of accumulated funds. Finally, it is noted that the cost recovery approach recommended for decommissioning would have similar advantage if applied to spent fuel cost recovery as well