John N Richards

Address:

949 Bishop Knl Ln, Knoxville, TN 37938

VIN:

1FMEU538X7UA32722

Make:

FORD

Model:

EXPLORER

Year:

2007

US Patent:

6924487, Aug 2, 2005

Filed:

Oct 1, 2002

Appl. No.:

10/261714

Inventors:

Alexander I. Bolozdynya - St. Petersburg FL, US
John D. Richards - Safety Harbor FL, US
Anatoli Arodzero - Palm Harbor FL, US

Assignee:

Constellation Technology Corporation - Largo FL

International Classification:

G01T003/06

US Classification:

25039001, 25039003, 25039011, 25037005

Abstract:

A neutron detector is provided which is able to measure thermal neutron radiation within a gap filled with a substance that permits scintillation in the absorption of thermal neutron radiation, the gap being formed between at least a first and second spaced apart photodetector working in electrical coincidence. The substance disposed within the gap can be either a gas, liquid or solid. In the case of a gas, a shell is used so that the gas can be retained and kept under pressure. The neutron detector is able to differentiate between gamma radiation and neutron energy. An alternate embodiment of the novel detector includes a device which employs a plurality of detectors surrounding a moderator which can be used to measure both thermal and high energy neutrons.

US Patent:

20120228510, Sep 13, 2012

Filed:

Nov 23, 2010

Appl. No.:

13/510362

Inventors:

Lloyd G. Clonts - Knoxville TN, US
Ronald G. Cooper - Oak Ridge TN, US
Bruce W. Hannan - Maryville TN, US
Jason P. Hodges - Knoxville TN, US
John D. Richards - Knoxville TN, US
Richard A. Riedel - Knoxville TN, US

Assignee:

UT BATTELLE, LLC - Oak Ridge TN

International Classification:

G01T 3/06

US Classification:

250362, 250366

Abstract:

Provided are sensors and methods for detecting thermal neutrons. Provided is an apparatus having a scintillator for absorbing a neutron, the scintillator having a back side for discharging a scintillation light of a first wavelength in response to the absorbed neutron, an array of wavelength-shifting fibers proximate to the back side of the scintillator for shifting the scintillation light of the first wavelength to light of a second wavelength, the wavelength-shifting fibers being disposed in a two-dimensional pattern and defining a plurality of scattering plane pixels where the wavelength-shifting fibers overlap, a plurality of photomultiplier tubes, in coded optical communication with the wavelength-shifting fibers, for converting the light of the second wavelength to an electronic signal, and a processor for processing the electronic signal to identify one of the plurality of scattering plane pixels as indicative of a position within the scintillator where the neutron was absorbed.