Non-shifting radiation source capsule专利检索-放射性材料化学元素和化合物专利检索查询-专利查询网

Non-shifting radiation source capsule

阅读：58发布：2023-09-11

专利汇可以提供Non-shifting radiation source capsule专利检索，专利查询，专利分析的服务。并且A substantially immobile ''''non-shifting'''' relatively low energy radiation source includes a particulate radioisotope bearing material positioned within a chamber formed in a capsule. Movement of the radioactive isotope element or any attenuating mass is prevented by a porous deformable conformational barrier member which has pores therein smaller than the smallest particle adjacent to the barrier and which prevents any attenuating producing movement of any particulate material within the capsule. In the case of gas producing radioisotopes, provision is made to permit escape of gas while preventing movement of attenuating masses or radioactive isotope material. Various radioisotopes and barrier members are described as well as various ways to assemble a ''''non-shifting'''' source.，下面是Non-shifting radiation source capsule专利的具体信息内容。

权利要求

1. In a radiation source capsule for use with gauges and the like, wherein said capsule includes a supporting shell and means forming a chamber within said shell for receiving a radioactive isotope, particulate radioisotope bearing material positioned within said chamber, said shell including radiation transmitting window means positioned to receive radiation from said particulate radioisotope bearing material and to permit passage thereof out of said shell, backer means positioned within said shell in adjacent spaced relation to said particulate radioisotope bearing material, the improvement comprising a conformable porous barrier means positioned within said shell between said backer means and said particulate radioisotope bearing material, said porous barrier means being compressed particulate material the pores in said barrier being smaller than the smallest particle adjacent to said barrier means, and said barrier means being in direct contact with the material in said chamber and substantially completely filling the space between said backer means and the said material for confining said particulate radioisotope bearing material and for preventing passage of particulate material between said backer means and said particulate radioisotope bearing material.

2. A radiation source capsule as set forth in claim 1 wherein said radioisotope bearing material includes a particulate radioisotope material and a particulate bulking material.

3. A radiation source capsule as set forth in claim 1 wherein said radioisotope bearing material is spaced from said barrier means by a particulate spacer layer, and wherein said porous barrier means includes pores smaller than both said radioisotope bearing material and said particulate spacer layer.

4. A radiation source capsule as set forth in claim 1 wherein said particulate radioisotope bearing material includes Americium-241 isotope, and wherein said source is a gamma source.

5. A radiation source capsule as set forth in claim 1 wherein said particulate radioisotope material includes a particulate refractory matrix the particles of which encase a radioactive isotope.

6. A radiation source capsule as set forth in claim 1 including gas reservoir means in said shell, said barrier means cooperating with said shell to permit passage of any gas produced by said radioisotope bearing material between said shell and said barrier means, and said backer means including means therein forming a gas passageway venting gas to said gas reservoir thereby preventing accumulation of gas pressure between said barrier means and said window.

7. A radiation source capsule as set forth in claim 1 wherein said radioisotope bearing material includes a radioisotope whose radioactive decay results in the formation of a gas, said barrier means being maintained in engagement with said shell by said backer means while permitting passage of the formed gas therethrough, means on the side of said barrier means opposite said radioisotope forming a gas reservoir for reception of the gas, and said backer means being so constructed and arranged as to permit passage of gas from said radioisotope to said gas reservoir.

8. A radiation source capsule as set forth in claim 7 wherein said backer means is a solid plug maintaining said barrier means in conformational engagement with the opposed surface of said radioisotope bearing material, sealing plug means positioned in said shell in spaced relation with said backer means, the space between said backer means and said sealing plug forming a gas reservoir, and said solid plug backer means cooperating with said shell to permit passage of gas from said radioisotope bearing material to said gas reservoir.

9. A radiation source capsule as set forth in claim 3 wherein said particulate radioisotope material includes a particulate refractory matrix the particles of which encase a radioactive isotope.

说明书全文

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Non-shifting radiation source capsule

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