Systems, devices, and methods for deformation reduction and resistance in metallic bodies

Patent metadata

Field	Value
Publication number	US-12563659-B2
Application number	US-202418675399-A
Country	US
Kind code	B2
Filing date	May 28, 2024
Priority date	Jul 23, 2020
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

Metallic bodies are provided having a lithium layer and a metallic substrate. The metallic bodies can exhibit increased resistance to radiation-induced deformations such as blistering. Methods are provided for transitioning the metallic bodies into more blister resistant configurations, as our methods for diminishing or eliminating blisters previously formed. Systems for utilizing the metallic bodies and methods are also disclosed.

First claim

What is claimed is:

1 . A boron neutron capture therapy (BNCT) target, comprising:
a metallic substrate; and a layer comprising lithium coupled with the metallic substrate, wherein the BNCT target has been exposed to a charged particle fluence of at least 6.3±0.6×10 20 protons per square centimeter (p/cm −2 ).

2 . The boron neutron capture therapy (BNCT) target of claim 1 , wherein the BNCT target exhibits a second resistance to blister formation greater than a first resistance to blister formation exhibited prior to the BNCT target being exposed to the charged particle fluence.

3 . The boron neutron capture therapy (BNCT) target of claim 1 , wherein the metallic substrate comprises copper.

4 . The boron neutron capture therapy (BNCT) target of claim 1 , further comprising a lithium compound layer between the layer comprising lithium and the metallic substrate.

5 . The boron neutron capture therapy (BNCT) target of claim 4 , wherein the layer comprising lithium comprises one of at least 90% lithium-7 isotope or at least 98% lithium-7 isotope.

6 . The boron neutron capture therapy (BNCT) target of claim 1 , wherein a first portion of the metallic substrate is in an amorphous state.

7 . The boron neutron capture therapy (BNCT) target of claim 5 , wherein a second portion of the metallic substrate is in a crystalline state, wherein the first portion is relatively closer to the layer comprising lithium than the second portion.

8 . The boron neutron capture therapy (BNCT) target of claim 1 , configured for use in a plasma fusion reactor or as a neutron generating target.

9 . A metallic body, comprising:
a metallic substrate; and a layer comprising lithium on the metallic substrate, wherein the metallic body is in a second state having one or more blisters of a second size, wherein the second size of the one or more blisters is lesser than a first size of the one or more blisters in the metallic body from a prior first state of the metallic body, wherein the second size of the one or more blisters in the second state is a result of an application of charged particle radiation to the metallic body.

10 . The metallic body of claim 9 , wherein the metallic body exhibits a second resistance to blister formation greater than a first resistance to blister formation exhibited prior to the application of the charged particle radiation to the metallic body.

11 . The metallic body of claim 9 , wherein the metallic substrate comprises copper.

12 . The metallic body of claim 9 , further comprising a lithium compound layer between the layer comprising lithium and the metallic substrate.

13 . The metallic body of claim 12 , wherein the layer comprising lithium comprises one of at least 90% lithium-7 isotope or at least 98% lithium-7 isotope.

14 . The metallic body of claim 9 , wherein a first portion of the metallic substrate is in an amorphous state.

15 . The metallic body of claim 14 , wherein a second portion of the metallic substrate is in a crystalline state, wherein the first portion is relatively closer to the layer comprising lithium than the second portion.

16 . The metallic body of claim 9 , configured for use in a plasma fusion reactor or as a neutron generation target.

17 . A target configured for use in boron neutron capture therapy (BNCT), comprising:
a first layer comprising lithium; and a copper substrate having a first portion in charged particle radiation induced amorphous state, wherein the target is configured to generate neutrons when exposed to proton radiation.

18 . The target of claim 17 , wherein the target is configured to generate neutrons when exposed to proton radiation without substantial formation of blisters in the copper substrate.

19 . The target of claim 17 , wherein the target is configured to generate neutrons when exposed to proton radiation having an average energy of 1.9 MeV-3.0 MeV and a current in a range of 1-20 mA without substantial formation of blisters in the copper substrate.

20 . The target of claim 17 , configured to generate neutrons according to a reaction p+ 7 Li→n+ 7 Be.

21 . The target of claim 17 , wherein the first layer has a thickness in a range of 1 to 300 microns.

22 . The target of claim 17 , wherein a second portion of the copper substrate is in a crystalline state, wherein the first portion is relatively closer to the first layer comprising lithium than the second portion.

23 . The target of claim 17 , further comprising a lithium copper compound layer between the first layer and the copper substrate.

Assignees

• Tae Tech Inc

Inventors

• Taskaev Sergey Y
• Makarov Alexandr N
• Sokolova Evgeniia O

Classifications

• A61N2005/1022

  Generators, e.g. X-ray tubes · CPC title

• A61N5/1077

  Beam delivery systems · CPC title

• H05H2277/11

  Radiotherapy · CPC title

• H05H5/063

  Tandems · CPC title

• A61N2005/109

  Neutrons · CPC title