公开(公告)号：US20220336117A1

公开(公告)日：2022-10-20

申请号：US17407853

申请日：2021-08-20

申请人： UNIVERSITY OF TSUKUBA ,  NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY ,  DAICO MFG CO., LTD.

发明人： Hiroaki KUMADA ,  Naoyuki KITAMURA ,  Tetsuyuki NAKAMURA ,  Takeshi IKEDA

IPC分类号： G21F1/08 ,  C04B35/553 ,  C04B35/626 ,  C04B35/64

摘要： As a sintered body for a radiation shielding material, which can effectively shield mainly low-energy-level neutrons, that is, thermal neutrons and lower, slow neutrons, and has excellent physical properties such as bending strength and Vickers hardness, leading to high machining strength, a sintered body for a radiation shielding material comprising LiF ranging between 99 wt. % to 5 wt. %, and one or more fluorides selected from among MgF2, CaF2, AlF3, KF, NaF, and/or YF3 ranging between 1 wt. % to 95 wt. %, having physical properties of a relative density of 92% or more, a bending strength of 50 MPa or more, and a Vickers hardness of 100 or more, is provided.

公开(公告)号：US20240123261A1

公开(公告)日：2024-04-18

申请号：US18376923

申请日：2023-10-05

申请人： UNIVERSITY OF TSUKUBA ,  NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY ,  DAICO MFG CO., LTD.

发明人： Hiroaki KUMADA ,  Naoyuki KITAMURA ,  Tetsuyuki NAKAMURA ,  Takeshi IKEDA

IPC分类号： A61N5/10

CPC分类号： A61N5/1077 ,  A61N5/1031 ,  A61N2005/1035 ,  A61N2005/109 ,  A61N2005/1094

摘要： The purpose is to prevent the irradiation beam from leaking between the beam irradiation port of the radiation therapy device and the patient affected area that is the target of the emitted irradiation beam, a radiation shielding jig comprising a tare filled with shielding material particles; the tare is made of a resin fabric and has a hollow three-dimensional shape with a radiation pathway portion, the shielding material particles comprising a mixture of sintered particles having a predetermined particle diameter with radiation shielding performance and resin particles having a predetermined particle diameter.

公开(公告)号：US20160082282A1

公开(公告)日：2016-03-24

申请号：US14684765

申请日：2015-04-13

申请人： UNIVERSITY OF TSUKUBA ,  TECHNO EYE CORPORATION ,  DAICO MFG CO., LTD.

发明人： Hiroaki KUMADA ,  Tetsuyuki NAKAMURA ,  Takeshi IKEDA ,  Takuji SHIGEOKA

IPC分类号： A61N5/10 ,  C04B35/553 ,  C04B35/64

CPC分类号： A61N5/10 ,  A61N2005/109 ,  A61N2005/1098 ,  C04B35/553 ,  C04B35/6261 ,  C04B35/62685 ,  C04B35/64 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/449 ,  C04B2235/5436 ,  C04B2235/5481 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6567 ,  C04B2235/658 ,  C04B2235/6583 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/96 ,  G21F1/00 ,  G21K1/00

摘要： A MgF2-CaF2 binary system sintered body for a radiation moderator having a compact polycrystalline structure excellent in radiation moderation performance, especially neutron moderation performance, comprises MgF2 containing CaF2 from 0.2% by weight to 90% by weight inclusive, having a bulk density of 2.96 g/cm3 or more, and a bending strength of 15 MPa or more and a Vickers hardness of 90 or more as regards mechanical strengths.

摘要翻译： 具有辐射调节性能，特别是中子调节性能优异的致密多晶结构的放射线调节剂的MgF 2 -CaF 2二元体系烧结体包括含有0.2重量％〜90重量％的含CaF 2的MgF 2，其堆积密度为2.96 g / cm 3以上，弯曲强度为15MPa以上，维氏硬度为90以上。

公开(公告)号：US20160002116A1

公开(公告)日：2016-01-07

申请号：US14405585

申请日：2014-05-27

申请人： UNIVERSITY OF TSUKUBA ,  DAICO MFG CO., LTD.

发明人： Hiroaki KUMADA ,  Tetsuyuki NAKAMURA ,  Takuji SHIGEOKA ,  Takeshi IKEDA

IPC分类号： C04B35/64 ,  C04B35/553 ,  C04B35/626 ,  C01F5/28

CPC分类号： C04B35/64 ,  C01F5/28 ,  C04B35/553 ,  C04B35/6261 ,  C04B35/62695 ,  C04B2235/3206 ,  C04B2235/5436 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6567 ,  C04B2235/658 ,  C04B2235/6583 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/95 ,  C04B2235/96 ,  C04B2235/9615 ,  G21C5/12 ,  G21K1/00

摘要： A fluoride sintered body suitable for a moderator which moderates high-energy neutrons so as to generate neutrons for medical care with which an affected part of the deep part of the body is irradiated to make a tumor extinct comprises MgF2 of a compact polycrystalline structure having a bulk density of 2.90 g/cm3 or more and as regards mechanical strengths, a bending strength of 10 MPa or more and a Vickers hardness of 71 or more.

摘要翻译： 一种适用于缓和高能中子以产生用于医疗护理的中子的慢化剂的氟化物烧结体，其中照射身体的深部的一部分以使肿瘤灭绝，其包括具有紧密多晶结构的MgF 2，其具有 堆积密度为2.90g / cm 3以上，关于机械强度，弯曲强度为10MPa以上，维氏硬度为71以上。

公开(公告)号：US20160351282A1

公开(公告)日：2016-12-01

申请号：US14911748

申请日：2015-12-18

申请人： UNIVERSITY TSUKUBA ,  TECHNO EYE CORPORATION ,  DAICO MFG CO., LTD.

发明人： Hiroaki KUMADA ,  Tetsuyuki NAKAMURA ,  Takeshi IKEDA ,  Takuji SHIGEOKA

IPC分类号： G21F1/06 ,  G21K5/02 ,  C04B35/636 ,  C04B35/645 ,  C04B35/553 ,  C04B35/626

摘要： A MgF2 system fluoride sintered body for a radiation moderator having a compact polycrystalline structure excellent in radiation moderation performance, especially neutron moderation performance, contains CaF2 of 90% by weight at the maximum and has a relative density of 95.2% or more.

摘要翻译： 具有辐射调节性能优异，特别是中子调节性能的紧凑型多晶结构的放射线调节剂的MgF 2系氟化物烧结体含有最大90重量％的CaF 2，相对密度为95.2％以上。