Integrated neutron-gamma radiation detector with optical waveguide and neutron scintillating material

• US 7,915,596 B2
• Filed: 05/17/2010
• Issued: 03/29/2011
• Est. Priority Date: 02/07/2008
• Status: Expired due to Fees

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: McDevitt, Daniel Bruno, Clothier, Brent Allen, Ivan, Adrian
• Primary Examiner(s): Porta; David P
• Assistant Examiner(s): Kim; Kiho
• Application Number:
  US12/781,182
• Publication Number:
  US 20100230603A1
• Time in Patent Office: 316 Days
• Field of Search: 25039001 -39012
• US Class Current: 250/390.01
• CPC Class Codes: G01T 1/202 the detector being a crystal
• CPC Class Codes: G01T 3/06 with scintillation detectors

Abstract

A radiation detector includes a neutron sensing element having a neutron scintillating material at least partially surrounded by an optical waveguide material; and a photosensing element optically coupled to the neutron sensing element. The photons emitted from the neutron sensing element are collected and channeled through the optical waveguide material and into the photosensing element.

Claims

1. A radiation detector, comprising:

a neutron sensing element comprising a neutron scintillating material at least partially surrounded by an optical waveguide material; and

a photosensing element optically coupled to the neutron sensing element,

wherein photons emitted from the neutron sensing element are collected and channeled through the optical waveguide material and into the photosensing element.

2. The detector according to claim 1, wherein the neutron sensing element comprises a plurality of cylindrical, concentric shells.

3. The detector according to claim 2, wherein at least one shell of the plurality of cylindrical shells is substantially aligned along a longitudinal axis of the detector.

4. The detector according to claim 2, wherein the neutron scintillating material and optical waveguide material alternate between each shell of the plurality of cylindrical shells.

5. The detector according to claim 1, wherein the neutron sensing element comprises a plurality of strands.

6. The detector according to claim 5, wherein the plurality of strands form a layered structure forming at least one cylindrical, concentric shell of the neutron sensing element.

7. The detector according to claim 5, wherein each strand comprises a solid core of the neutron scintillating material disposed within the optical waveguide material.

8. The detector according to claim 5, wherein each strand comprises a cylindrical layer of neutron scintillating material disposed between a solid core and outer cladding of optical waveguide material.

9. The detector according to claim 5, wherein at least one strand of the plurality of strands is substantially aligned along a longitudinal axis of the detector.

10. The detector according to claim 1, wherein the optical waveguide material comprises an optical waveguide.

11. A method for detecting radiation, comprising:

disposing a neutron scintillating material within an optical waveguide material to form a neutron sensing element; and

optically coupling the neutron sensing element to a photosensing element,

whereby photons emitted from the neutron sensing element are collected and channeled through the optical waveguide material and into a photosensing element.