Claims
- 1. An electron multiplier, comprising:
a structure comprising a plurality of interconnected fibers having electron-emissive surfaces, the fibers having a width to thickness aspect ratio greater than one.
- 2. The multiplier of claim 1, wherein the fibers are randomly interconnected.
- 3. The multiplier of claim 1, wherein the fibers include a glass having lead.
- 4. The multiplier of claim 1, wherein the plate comprises a neutron-sensitive material.
- 5. The multiplier of claim 4, wherein the neutron-sensitive material is selected from the group consisting of 6Li, 10B, 155Gd, and 157Gd in excess of their natural abundance.
- 6. The multiplier of claim 1, wherein the structure comprises a hydrogen-containing material.
- 7. The multiplier of claim 1, wherein the structure comprises a material selected from the group consisting of silicon carbide, boron nitride, boron carbide, carbon, borosilicate glass, lithium glass, gadolinium glass, 3He, 6Li, 10B, 113Cd, 149Sm, 151Eu, 155,157Gd, U, 1,2,3H, and Pb.
- 8. The multiplier of claim 1, further comprising an elongated electrode, the structure surrounding a portion of the electrode.
- 9. The multiplier of claim 1, wherein the fibers has a width to thickness aspect ratio greater than five.
- 10. The multiplier of claim 1, wherein the fibers has a width to thickness aspect ratio greater than ten.
- 11. An electron multiplier, comprising:
an elongated electrode; and a structure surrounding a portion of a cross section of the electrode, the structure comprising randomly interconnected fibers, shards, or spheres.
- 12. The multiplier of claim 11, wherein the electrode is a wire.
- 13. The multiplier of claim 11, wherein the structure completely surrounds a cross section of the electrode.
- 14. The multiplier of claim 11, wherein the structure is spaced from the electrode.
- 15. The multiplier of claim 11, further comprising a hydrogen-containing material on a portion of the structure.
- 16. The multiplier of claim 15, wherein the hydrogen-containing material comprises a polymer.
- 17. The multiplier of claim 11, comprising a plurality of electrodes.
- 18. The multiplier of claim 17, wherein the electrodes are symmetrically arranged about a cross section of the multiplier.
- 19. The multiplier of claim 11, wherein the electrode and the structure are coaxial.
- 20. The multiplier of claim 11, wherein the structure has a circular cross section.
- 21. The multiplier of claim 11, wherein the structure has a polygonal cross section.
- 22. The multiplier of claim 11, wherein the structure comprises a neutron-sensitive material.
- 23. The multiplier of claim 11, wherein the structure comprises an electron emissive material.
- 24. The multiplier of claim 11, wherein the structure comprises lead.
- 25. The multiplier of claim 11, wherein the electrode is a negative electrode.
- 26. The multiplier of claim 11, wherein the electrode is a positive electrode.
- 27. A method of making an electron multiplier, comprising:
depositing an electron emissive material on a reticulated substrate; and forming the reticulated substrate into the electron multiplier.
- 28. The method of claim 27, wherein the electron emissive material comprises glass including lead.
- 29. The method of claim 28, wherein the glass comprises a material selected from the group consisting of silicon carbide, boron nitride, boron carbide, carbon, borosilicate glass, lithium glass, gadolinium glass, 3He, 6Li, 10B, 113Cd, 149Sm, 151Eu, 155,157Gd, U, 1,2,3H, and Pb.
- 30. The method of claim 27, wherein the reticulated substrate comprises a material selected from the group consisting of silicon carbide, boron nitride, boron carbide, carbon, borosilicate glass, lithium glass, gadolinium glass, 3He, 6Li, 10B, 113Cd, 149Sm, 151Eu, 155,157Gd, U, 1,2,3H, and Pb.
- 31. A method of making an electron multiplier, comprising:
providing a first structure comprising a plurality of bodies and an electron emissive material; and selectively removing the plurality of bodies to form a second structure having voids defined by the electron emissive material.
- 32. The method of claim 31, wherein the bodies are spherical.
- 33. The method of claim 31, wherein the bodies are hollow.
- 34. The method of claim 31, wherein the electron emissive material have a spherical, fibrous, or chard-like shape.
- 35. The method of claim 31, comprising removing the bodies by chemical etching.
CLAIM OF PRIORITY
[0001] This application claims priority under 35 U.S.C. § 119(e) to U.S. Patent Application Ser. No. 60/474,547, filed on May 29, 2003, the entire contents of which are hereby incorporated by reference.
Provisional Applications (1)
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Number |
Date |
Country |
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60474547 |
May 2003 |
US |