# US 2014/0299780 A1 · Neutron Detection and Collimation

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- Number: US 2014/0299780 A1
- Document ID: US20140299780A1
- Status: Published application
- Kind: A1
- Application number: 13/894,211
- Filed: 2013-05-14
- Published: 2014-10-09
- Earliest claimed: 2008-11-19
- Assignees: Nova Scientific, Inc.
- Applicants: Nova Scientific, Inc.
- Inventors: W. Bruce Feller; Paul L. White; William J.S. Zhong
- Web page: https://patentgrep.com/patent/US20140299780A1

## CPC

- H10F 77/12: Active materials
- G01T 1/00: Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation (G01T3/00, G01T5/00 take precedence)
- G01T 3/00: Measuring neutron radiation (G01T5/00 takes precedence)
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00)

## Abstract

A device includes a neutron-sensitive composition. The composition includes, in weight percent, a non-zero amount of aluminum oxide (e.g., approximately 1% to approximately 3.5% aluminum oxide), greater than 12% (e.g., approximately 12% to approximately 17%) boron oxide, greater than approximately 60% silicon oxide (e.g., approximately 62% to approximately 68% silicon oxide), and a non-zero amount of sodium oxide (e.g., approximately 10% to approximately 14% sodium oxide). The device is capable of interacting with neutrons to form an electron cascade.

## Claims

### Claim 1

A device, comprising:
a neutron-sensitive composition comprising, in weight percent,
a non-zero amount of aluminum oxide,
approximately 12% to approximately 17% boron oxide,
greater than approximately 60% silicon oxide, and
a non-zero amount of sodium oxide,
wherein the device is capable of interacting with neutrons to form an electron cascade.

### Claim 2 (depends on 1)

The device of claim 1, wherein the boron oxide comprises substantially boron-10 enriched boron oxide.

### Claim 3 (depends on 1)

The device of claim 1, wherein the composition further comprises a non-zero amount of calcium oxide less than approximately 4 weight percent.

### Claim 4 (depends on 1)

The device of claim 1, wherein the composition further comprises a non-zero amount of magnesium oxide less than approximately 3 weight percent.

### Claim 5 (depends on 1)

The device of claim 1, wherein the composition further comprises a non-zero amount of arsenic oxide or antimony oxide less than approximately 0.5 weight percent.

### Claim 6 (depends on 1)

The device of claim 1, wherein the composition further comprises a non-zero amount of lithium oxide less than approximately 2 weight percent.

### Claim 7 (depends on 1)

The device of claim 1, wherein the composition is substantially free of lead.

### Claim 8 (depends on 1)

The device of claim 1, wherein the composition consists essentially of, in weight percent, approximately 1% to approximately 3.5% aluminum oxide, approximately 12% to approximately 17% boron oxide, approximately 62% to approximately 68% silicon oxide, approximately 10% to approximately 14% sodium oxide, approximately 0% to approximately 4% calcium oxide, approximately 0% to approximately 3% magnesium oxide, approximately 0% to approximately 0.5% antimony oxide or arsenic oxide, and approximately 0% to approximately 2% lithium oxide.

### Claim 9 (depends on 8)

The device of claim 8, wherein the boron oxide is substantially boron-10 enriched boron oxide.

### Claim 10 (depends on 1)

The device of claim 1, further comprising a structure comprising a plurality of channels and the neutron-sensitive composition.

### Claim 11 (depends on 10)

The device of claim 10, wherein the channels comprise a conducting and electron emissive surface.