Alpha/beta radiation shielding materials

Patent metadata

Field	Value
Publication number	US-10340049-B2
Application number	US-201615228448-A
Country	US
Kind code	B2
Filing date	Aug 4, 2016
Priority date	Aug 4, 2016
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

Alpha/beta radiation barrier materials and structures formed to include the barrier materials are described. Barrier materials include a matrix and particulate materials contained in the matrix. The particulates include alpha/beta radiation absorbers. Alpha/beta radiation absorbers of the barrier materials can be molecular, particulates, or defined nanostructures that are capable of absorbing incident alpha/beta particle energies. Matrix materials can include organic or inorganic materials including thermoplastic polymers, thermoset polymers, glasses, ceramics, etc.

First claim

What is claimed is:

1. A radiological barrier material comprising a matrix and a particulate having a cross sectional dimension of about 500 micrometers or less contained within the matrix, the particulate comprising a radiation absorber that absorbs either one or both of alpha and beta radiation, the particulate comprising a defined nanostructure, the defined nanostructure comprising an aluminosilicate nanotube, the radiation absorber comprising a metal oxide, the radiation absorber further comprising an energy absorbing chromophore on the surface of the particulate.

2. The radiological barrier material of claim 1 , wherein the radiation absorber further comprises a semiconductor.

3. The radiological barrier material of claim 1 , wherein the matrix comprises an organic matrix.

4. The radiological barrier material of claim 1 , wherein the matrix comprises an inorganic matrix.

5. The radiological barrier material of claim 4 , wherein the inorganic matrix comprises a glass or a ceramic.

6. The radiological barrier material of claim 1 , wherein the radiological barrier material is in the form of a fiber or a sheet.

7. A container for radiation emitting material, the container comprising the radiological barrier material of claim 1 .

8. The container of claim 7 , wherein the container comprises a flexible bag.

9. The container of claim 8 , wherein the container is a single-layer flexible bag.

10. Personal protective equipment comprising the radiological barrier material of claim 1 .

11. The personal protective equipment of claim 10 , wherein the personal protective equipment comprises a glove.

12. The personal protective equipment of claim 10 , wherein the personal protective equipment comprises a face shield or a body suit.

13. The radiological barrier material of claim 1 , wherein the metal oxide comprises TiO 2 , FeO 2 , AlO 2 , CeO 2 , WO 4 , Cr 2 O 3 , SiO 2 , MgO 2 , CaO 2 , BaO 2 , CoO, VO 2 , NiO 2 , CuO 2 , ZnO, YO 2 , Na 2 WO 2 , ZrO 2 or a combination of one or more metal oxides.

14. The radiological barrier material of claim 1 , wherein the particulate is formed of the metal oxide.

Assignees

• Savannah River Nuclear Solutions Llc

Inventors

• Washington Ii Aaron L
• Nicholson James C

Classifications

• G21F1/103

  Dispersions in organic carriers · CPC title

• G21F1/08 Primary

  Metals; Alloys; Cermets, i.e. sintered mixtures of ceramics and metals · CPC title

• G21F3/02

  Clothing · CPC title

• G21F5/015

  for storing radioactive sources, e.g. source carriers for irradiation units; Radioisotope containers · CPC title

• G21F1/106

  metallic dispersions · CPC title