Electron Spin Resonance of the Excited Triplet State of Biologically Important Molecules

Abstract

From the late 1960s until the mid 1980s many projects conducted research on superconducting power transmission systems. The culmination was the testing of a prototype system rated for 1000 M V A -a power level suitable for initial trials in a utility system. The specific design adopted for each development produced differing requirements for the conductor, dielectric insulation. cooling system and the cryogenic enclosure. Similar constraints apply to a design based on the use of high-c superconductors. If superconducting systems are to become a commercial reality they must fill a technical niche in the overall power delivery system and be economically competitive with conventional equipment. A detailed cost estimate for an 800 MVA superconducting power transmission system indicates the priorities that must be given in a research and development programme so that the most expensive components can be developed to achieve lower costs and at the same time improve the operational performance.