Ashley Clinton Stowe

US Patent:

20100090162, Apr 15, 2010

Filed:

Oct 8, 2009

Appl. No.:

12/575557

Inventors:

Rana F. Mohtadi - Northville MI, US
Ragaiy Zidan - Aiken SC, US
Josh Gray - Aiken SC, US
Ashley C. Stowe - Knoxville TN, US
Premkumar Sivasubramanian - Aiken SC, US

Assignee:

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

International Classification:

C09K 3/00

US Classification:

25218232

Abstract:

A process of forming a hydrogen storage material, including the steps of: providing a borohydride material of the formula: M(BH)where M is an alkali metal or an alkaline earth metal and 1≦x≦2; providing an alanate material of the formula: M(AlH)where Mis an alkali metal or an alkaline earth metal and 1≦x≦2; providing a halide material of the formula: MHalwhere Mis an alkali metal, an alkaline earth metal or transition metal and Hal is a halide and 1≦x≦4; combining the borohydride, alanate and halide materials such that 5 to 50 molar percent from the borohydride material is present forming a reaction product material having a lower hydrogen release temperature than the alanate material.

US Patent:

20230019822, Jan 19, 2023

Filed:

Jul 8, 2021

Appl. No.:

17/370366

Inventors:

- Oak Ridge TN, US
Ashley C. STOWE - Knoxville TN, US

International Classification:

G01T 1/24
H01L 31/032

Abstract:

A wide band gap semiconductor NAND based neutron detection system includes a semiconductor layer comprising a wide band gap material with a neutron absorber material in the wide band gap material, and the semiconductor layer is the only layer of the wide band gap semiconductor NAND based neutron detection system fabricated with the neutron absorber material.

US Patent:

20210395152, Dec 23, 2021

Filed:

Apr 22, 2021

Appl. No.:

17/237141

Inventors:

- Oak Ridge TN, US
Ashley C. STOWE - Knoxville TN, US

International Classification:

C04B 35/547
G01T 1/24
B28B 3/02
G01T 1/203
G01T 3/08
C09K 11/62
C04B 35/645
C09K 11/88

Abstract:

A ceramic lithium indium diselenide or like radiation detector device formed as a pressed material that exhibits scintillation properties substantially identical to a corresponding single crystal growth radiation detector device, exhibiting the intrinsic property of the chemical compound, with an acceptable decrease in light output, but at a markedly lower cost due to the time savings associated with pressing versus single crystal growth.

US Patent:

20190092693, Mar 28, 2019

Filed:

Aug 6, 2018

Appl. No.:

16/055896

Inventors:

- Oak Ridge TN, US
Ashley C. STOWE - Knoxville TN, US

International Classification:

C04B 35/547
G01T 1/24
G01T 3/08
G01T 1/203
B28B 3/02

Abstract:

A ceramic lithium indium diselenide or like radiation detector device formed as a pressed material that exhibits scintillation properties substantially identical to a corresponding single crystal growth radiation detector device, exhibiting the intrinsic property of the chemical compound, with an acceptable decrease in light output, but at a markedly lower cost due to the time savings associated with pressing versus single crystal growth.

US Patent:

20170090045, Mar 30, 2017

Filed:

Aug 7, 2014

Appl. No.:

14/453768

Inventors:

Ashley C. STOWE - Knoxville TN, US
Arnold BURGER - Nashville TN, US
Pijush BHATTACHARYA - Nashville TN, US
Yevgeniy TUPITSYN - Nashville TN, US

Assignee:

Consolidated Nuclear Security, LLC - Oak Ridge TN
Fisk University - Nashville TN

International Classification:

G01T 1/202
G01T 1/208
G01T 3/06

Abstract:

A combined thermal neutron detector and gamma-ray spectrometer system, including: a first detection medium including a lithium chalcopyrite crystal operable for detecting neutrons; a gamma ray shielding material disposed adjacent to the first detection medium; a second detection medium including one of a doped metal halide, an elpasolite, and a high Z semiconductor scintillator crystal operable for detecting gamma rays; a neutron shielding material disposed adjacent to the second detection medium; and a photodetector coupled to the second detection medium also operable for detecting the gamma rays; wherein the first detection medium and the second detection medium do not overlap in an orthogonal plane to a radiation flux. Optionally, the first detection medium includes a LiInSecrystal. Optionally, the second detection medium includes a SrI(Eu) scintillation crystal.

US Patent:

20150378031, Dec 31, 2015

Filed:

Sep 2, 2015

Appl. No.:

14/843150

Inventors:

Ashley C. STOWE - Knoxville TN, US
Arnold BURGER - Nashville TN, US

Assignee:

FISK UNIVERSITY - NASHVILLE TN
CONSOLIDATED NUCLEAR SECURITY, LLC - Reston VA

International Classification:

G01T 1/20

Abstract:

A photodetector device, including: a scintillator material operable for receiving incident radiation and emitting photons in response; a photodetector material coupled to the scintillator material operable for receiving the photons emitted by the scintillator material and generating a current in response, wherein the photodetector material includes a chalcopyrite semiconductor crystal; and a circuit coupled to the photodetector material operable for characterizing the incident radiation based on the current generated by the photodetector material. Optionally, the scintillator material includes a gamma scintillator material and the incident radiation received includes gamma rays. Optionally, the photodetector material is further operable for receiving thermal neutrons and generating a current in response. The circuit is further operable for characterizing the thermal neutrons based on the current generated by the photodetector material.

US Patent:

20150285924, Oct 8, 2015

Filed:

Jun 3, 2015

Appl. No.:

14/729715

Inventors:

Ashley C. STOWE - Knoxville TN, US
Brenden WIGGINS - Oak Ridge TN, US
Arnold BURGER - Nashville TN, US

Assignee:

FISK UNIVERSITY - NASHVILLE TN
CONSOLIDATED NUCLEAR SECURITY, LLC - Reston VA

International Classification:

G01T 3/00
C30B 29/46
H01L 21/67
C30B 33/02

Abstract:

A radiation detection device, including: a support structure; and a chalcopyrite crystal coupled to the support structure; wherein, when the chalcopyrite crystal is exposed to radiation, a visible spectrum of the chalcopyrite crystal changes from an initial color to a modified color. The visible spectrum of the chalcopyrite crystal is changed back from the modified color to the initial color by annealing the chalcopyrite crystal at an elevated temperature below a melting point of the chalcopyrite crystal over time. The chalcopyrite crystal is optionally a LiInSecrystal. The radiation is comprised of neutrons that decrease the Li concentration of the chalcopyrite crystal via a Li(n,α) reaction. The initial color is yellow and the modified color is one of orange and red. The annealing temperature is between about 450 degrees C. and about 650 degrees C. and the annealing time is between about 12 hrs and about 36 hrs.

US Patent:

20140268124, Sep 18, 2014

Filed:

Mar 15, 2013

Appl. No.:

13/835005

Inventors:

Ashley Clinton Stowe - Knoxville TN, US
Norm Smyrl - Knoxville TN, US

Assignee:

BABCOCK & WILCOX TECHNICAL SERVICES Y-12, L.L.C. - Oak Ridge TN

International Classification:

G02B 21/26
G01N 21/01

US Classification:

356244, 359391

Abstract:

An environmental cell assembly for use in microscopy and spectroscopy applications, including: an environmentally sealed body assembly configured to selectively hold and contain a sample; a plurality of ports manufactured into one or more surfaces of the body assembly for one or more of evacuating the body assembly and injecting a gas into or removing a gas from the body assembly; a port manufactured into a surface of the body assembly for receiving a translating stage configured to move the sample within the body assembly; and a port manufactured into a surface of the body assembly for receiving one or more lenses utilized in a microscopy or spectroscopy application; wherein the one or more lenses are disposed adjacent the sample without intervening structures disposed there between. The cell assembly also includes a port manufactured into a surface of the body assembly for retaining a window and providing visualization of the sample.