Experimental studies using light ions to simulate fusion neutron damage effects on mechanical properties

This paper presents some first results from ongoing experimental work to compare effects of light ion and fusion neutron damage on tensile yield strengths of Ni and Nb. Comparisons of these results with calculated damage energy values are discussed, and the significance of such measurements evaluated

Some experimental considerations regarding ion beam simulation of neutron irradiation for mechanical property measurements

A preliminary assessment of the requirements for mechanical property data related to CTR materials is given. The status of ion simulation for mechanical property measurements is described. A damage analysis and calculations for light ions are presented along with sample size, heating and cooling, and surface considerations. (MOW

Comparison of solar pond concepts for electrical power generation

The objectives of this study were to: (1) Identify the various solar pond concepts for electric power generation, including but not limited to: (a) nonconvective salt gradient solar pond, (b) ponds with various plastic or other membranes at suitable locations to minimize or eliminate convection, (c) ponds which are totally or partially gelled to reduce or eliminate convection, and (d) shallow convecting ponds; (2) analyze and compare the performance of these various concepts; and (3) estimate the pond cost and overall power plant system cost for each concept assuming the nonconvective gradient salt pond as the base case. The approach includes a preliminary design of several power plant systems based on solar pond concepts, and performance and economic evaluation based on these preliminary designs. (WDM

Monitoring Sodium Chloride Concentrations and Density Profiles in Solar Ponds by Electrical Conductivity and Temperature Measurement

Table 2 , based on laboratory results and estimates obtained with equation Conclusions The density measurement technique described in this paper does not offer a significant increase in accuracy over current methods, but it is much easier to implement, particularly in long-term monitoring applications. The transducer output voltage is linear with fluid density within about 1 percent under the most adverse conditions expected in a solar pond. A significant improvement can be realized here if the transducer output is calibrated against upper and lower convective zone density determined by laboratory analysis of only two fluid samples. The vertical resolution or "window" Az is 5 cm, and an improvement here would certainly be desirable. Further experimentation may enable a reduction in Az with no decrease in instrument accuracy. Acknowledgment The work described herein was funded by the U.S. Dept. of Energy, through a subcontract from the Los Alamos Scientific Laboratory. Vol. 26, No. 9, Sept. 1979, pp. 66-67. 7 Lawford, V. N., "Differential Pressure Instruments: The Universal Measurement Tools," Instrumentation Technology, Vol. 21, No. 12, Dec. 1974, pp.37-38. 8 Langeliers, J., and Stojanoff, C. G., "Design and Construction of a Solar Pond Density Profiling Device-Final Report." prepared for the University of California Los Alamos Scientific Laboratory, Apr. 1982. References Design and Testing of a Plasti