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Refractory materials for high-temperature thermoelectric energy conversion

Description: Theoretical work of two decades ago adequately explained the transport behavior and effectively guided the development of thermoelectric materials of high conversion efficiencies of conventional semiconductors (e.g., SiGe alloys). The more significant contributions involved the estimation of optimum doping concentrations, the reduction of thermal conductivity by solid solution doping and the development of a variety of materials with ZT approx. 1 in the temperature range 300 K to 1200 K. It was… more
Date: January 1, 1983
Creator: Wood, C. & Emin, D.
Partner: UNT Libraries Government Documents Department
open access

Semiconductor processing with excimer lasers

Description: The advantages of pulsed excimer lasers for semiconductor processing are reviewed. Extensive comparisons of the quality of annealing of ion-implanted Si obtained with XeCl and ruby lasers have been made. The results indicate that irrespective of the large differences in the optical properties of Si at uv and visible wavelengths, the efficiency of usage of the incident energy for annealing is comparable for the two lasers. However, because of the excellent optical beam quality, the XeCl laser ca… more
Date: January 1, 1983
Creator: Young, R.T.; Narayan, J.; Christie, W.H.; van der Leeden, G.A.; Rothe, D.E. & Cheng, L.J.
Partner: UNT Libraries Government Documents Department
open access

Mathematical simulation of contaminant distribution in and around the uranium mill tailing piles, Riverton, Wyoming

Description: As part of the Research and Development phase of the Uranium Mill Tailings Remedial Action (UMTRA) program, the Lawrence Berkeley Laboratory (LBL) has set itself the goal of explaining the physico-chemical evolution of the Riverton site on the basis of the already collected field data at the site (Tokunaga and Narasimhan, 1982, Smith and Moed, 1982; White et al., 1984). The predictive aspects as well as addressing the question of critical quantity of field data have to be considered during the … more
Date: February 1, 1983
Creator: Narasimhan, T. N.; Tokunaga, T.; White, A. F. & Smith, A. R.
Partner: UNT Libraries Government Documents Department
open access

Investigation of the Pathway of Contaminated Soil Transported to Plant Surfaces by Raindrop Splash

Description: The environmental transport pathway of soil-borne radioisotopes to vegetation surfaces via raindrop splash was studied. The data show that soil can significantly contribute to the contamination found on plants. Further detailed study is needed to calculate the rate constant for the raindrop splash and retention pathways. 8 references, 1 figure. (ACR)
Date: October 21, 1983
Creator: Dreicer, M.; Hakonson, T. E.; Whicker, F. W. & White, G. C.
Partner: UNT Libraries Government Documents Department
open access

SP-100, a project manager`s view. Technical information report

Description: Born to meet the special needs of America`s space effort, the SP-100 Program testifies to the cooperation among government agencies. The Department of Energy (DOE), the National Aeronautics and Space Administration (NASA), and the Defense Advanced Research Projects Agency (DARPA) are working together to produce a 100-kW power system for use in outer space. At this point in the effort, it is appropriate to review: The approach to meet program goals; the status of activities of the Project Office… more
Date: December 1, 1983
Creator: Truscello, V. C.
Partner: UNT Libraries Government Documents Department
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