Abstract:
Disclosed is a discharge electrode material which enables to form a discharge electrode having a life and discharge characteristics equivalent to those of a discharge electrode which is mainly composed of Nb. Furthermore, the discharge electrode material is excellent in weldability to a supporting conductor and enables to reduce the material cost. The cladding material for discharge electrodes comprises a base layer (1) composed of pure Ni, an Ni-base alloy mainly containing Ni or a stainless steel, and a surface layer (2) whichi is joined to the base layer (1) and composed of pure Nb or an Nb-base alloy mainly containing Nb. An intermediate layer composed of a stainless steel is preferably arranged between the base layer (1) and the surface layer (2). The base layer (1) may be formed as a band plate and the surface layer (2) may be superposed only on the central portion of the base layer (1).
Abstract:
A superconducting filter (1) comprises a columnar resonant member (23), one end of which is fixed to an inner wall (22) of a filter case (21) in such a manner that it is not in contact with connectors (27a, 27b) provided for connection with signal input/output cables (5a, 5b). This filter exhibits a stable filter characteristic because of stable superconduction created by extreme limitation of the entrance of heat. Because of its superior power performance, the power loss can be minimized even if the number of filter stages is increased to achieve sharp cutoff frequency discrimination.
Abstract:
A structural body is formed on a substrate in the following manner. A first-element layer of one or less atomic layer is formed by arranging atoms of a first element of gold, silver, copper, nickel, palladium, platinum or a group IV element in the most stable positions in terms of energy by utilization of the irregular pattern the irregularity of which is the order of one atom and which exists on a crystalline substrate of a semiconductor such as silicon, selenium or other substance, and then, atoms of a second element of at least one kind out of group III elements, group IV elements, and group V elements are deposited by vapor deposition, sputtering, or the like only on a part of the surface of the substrate where the layer of one or less atomic layer is formed.