Materials for electrochemical cell separators Summary report

Asbestos and other candidate materials for electrochemical cell separator

Event-by-event study of prompt neutrons from 239Pu(n,f)

Employing a recently developed Monte Carlo model, we study the fission of 240Pu induced by neutrons with energies from thermal to just below the threshold for second chance fission. Current measurements of the mean number of prompt neutrons emitted in fission, together with less accurate measurements of the neutron energy spectra, place remarkably fine constraints on predictions of microscopic calculations. In particular, the total excitation energy of the nascent fragments must be specified to within 1 MeV to avoid disagreement with measurements of the mean neutron multiplicity. The combination of the Monte Carlo fission model with a statistical likelihood analysis also presents a powerful tool for the evaluation of fission neutron data. Of particular importance is the fission spectrum, which plays a key role in determining reactor criticality. We show that our approach can be used to develop an estimate of the fission spectrum with uncertainties several times smaller than current experimental uncertainties for outgoing neutron energies up to 2 MeV.Comment: 17 pages, 20 figure

Odonata at a Small Woodland Pond in Southern Illinois

A survey of the adult odonate fauna of a small woodland pond in Pope County, Illinois, was conducted during 1983--·1984. Twenty-four species were collected including Aeshna mutata and Anax longipes. In addition, Libellula vibrans was collected in 1982, and Aeshna sp. (probably u. umbrosa) observed the same year but not collected

Initial radio-frequency gas heating experiments to simulate the thermal environment in a nuclear light bulb reactor

Initial radio frequency gas heating experiments to simulate thermal environment in nuclear light bulb reacto

Experimental investigations to simulate the thermal environment, transparent walls, and propellant heating in a nuclear light bulb engine

Simulating thermal environment, transparent walls, and propellant heating in nuclear light bulb engin

Study of asbestos for electrochemical cells First summary report

Fuel cell asbestos test progra

Materials for Electrochemical Cell Separators

Chemical and electrochemical compatibility of fuel cell type asbestos, zirconia, and ceria for use in alkaline-electrolyte electrochemical cell separator

Carbonation cell materials compatibility

Material test and evaluation program for compatibility of materials with alkaline and acid electrolyte environments of carbonation cell syste