MAGNETIC FIELD GENERATING APPARATUS FOR NUCLEAR MAGNETIC RESONANCE AND MANUFACTURING METHOD OF MAGNETIC FIELD GENERATING APPARATUS FOR NUCLEAR MAGNETIC RESONANCE

• Main Author: MORITA MITSURU
• Format: Patent
• Language: English; Japanese
• Published: 09.04.2020
• Subjects: BASIC ELECTRIC ELEMENTS; DIAGNOSIS; ELECTRICITY; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; INDUCTANCES; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MAGNETS; MEASURING; MEDICAL OR VETERINARY SCIENCE; PHYSICS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SURGERY; TESTING; TRANSFORMERS

To provide a magnetic field generating apparatus for nuclear magnetic resonance having a wider bore space.SOLUTION: A magnetic field generating apparatus for nuclear magnetic resonance comprises: a magnet unit including a plurality of oxide superconductive bulk bodies having a composition obtained by dispersing a REBaCuOphase in a monocrystalline REBaCuOphase and formed into a ring shape; and a storage tank storing the magnet unit inside thereof. The magnet unit includes a laminate obtained by stacking each of the plurality of oxide superconductive bulk bodies coaxially and in a coaxial direction. The storage tank is composed of a cylindrical storage tank inner wall provided along an inner peripheral surface of the magnet unit, and a storage tank outer wall provided along an outer surface of the magnet unit. At least one first oxide superconductive bulk body of the oxide superconductive bulk bodies of an outermost layer of the laminate has an inner diameter smaller than that of a second oxide superconductive bulk body that is other than the outermost layer of the laminate, and smaller than an outer diameter of a portion of the storage tank inner wall positioned on an inner peripheral surface side of a second oxide superconductive bulk body.SELECTED DRAWING: Figure 2 【課題】本発明は、より広いボア空間を有する核磁気共鳴用磁場発生装置を提供する。【解決手段】本発明に係る核磁気共鳴用磁場発生装置は、単結晶状のＲＥＢａ２Ｃｕ３Ｏｙ相にＲＥ２ＢａＣｕＯ５相が分散した組織を有し、かつ、リング状である、複数の酸化物超電導バルク体を含む磁石ユニットと、磁石ユニットを内部に収容する収容槽と、を備え、磁石ユニットは、複数の酸化物超電導バルク体のそれぞれが、同軸かつ同軸方向に積層された積層体を含み、収容槽は、磁石ユニットの内周面に沿って設けられる筒状の収容槽内壁と、磁石ユニットの外表面に沿って設けられる収容槽外壁とで形成され、積層体の最外層の酸化物超電導バルク体のうちの少なくとも一方の第１酸化物超電導バルク体の内径は、積層体の最外層以外の第２酸化物超電導バルク体の内径よりも小さく、かつ、収容槽内壁における第２酸化物超電導バルク体の内周面側に位置する部分の外径よりも小さい。【選択図】図２