Zhehui Wang

7450222, Nov 11, 2008

Jul 2, 2007

11/772391

Zhehui Wang - Los Alamos NM, US
Shengnian Luo - Los Alamos NM, US
Cris W. Barnes - Arlington VA, US
Stephen F. Paul - West Orange NJ, US

The United States of America as represented by the United States Department of Energy - Washington DC

G01P 3/36

356 285, 356 28

A velocimetry apparatus and method comprising splitting incoming reflected laser light and directing the laser light into first and second arms, filtering the laser light with passband filters in the first and second arms, one having a positive passband slope and the other having a negative passband slope, and detecting the filtered laser light via light intensity detectors following the passband filters in the first and second arms.

8445859, May 21, 2013

Jun 9, 2010

12/797414

Zhehui Wang - Los Alamos NM, US
Christopher Morris - Los Alamos NM, US
Jeffrey Darnell Bacon - Santa Fe NM, US
Mark F. Makela - Los Alamos NM, US
Randy Jay Spaulding - Sante Fe NM, US

Los Alamos National Security, LLC - Los Alamos NM

G01T 3/00

25039001

High-efficiency neutron detector substrate assemblies comprising a first conductive substrate, wherein a first side of the substrate is in direct contact with a first layer of a powder material comprising boron, boron carbide or combinations thereof, and wherein a conductive material is in proximity to the first layer of powder material; and processes of making said neutron detector substrate assemblies.

20120161023, Jun 28, 2012

Dec 8, 2010

12/963492

Zhehui Wang - Los Alamos NM, US
Christopher Morris - Los Alamos NM, US

LOS ALAMOS NATIONAL SECURITY, LLC - Los Alamos NM

G01T 3/00
B32B 37/02
B05D 5/12
B82Y 15/00

25039001, 427 58, 156 60, 977954

High-efficiency neutron detector substrate assemblies comprising a first conductive substrate, wherein a first side of the substrate is in direct contact with a first layer of a powder material having a thickness of from about 50 nm to about 250 nm and comprising boron, boron carbide or combinations thereof, and wherein a conductive material is in proximity to the first layer of powder material; and processes of making said neutron detector substrate assemblies.

6486593, Nov 26, 2002

Sep 29, 2000

09/672045

Zhehui Wang - Los Alamos NM
Cris W. Barnes - Santa Fe NM

The United States of America as represented by the United States Department of Energy - Washington DC

H01J 1726

31323131, 313295

There has been invented an apparatus for acceleration of a plasma having coaxially positioned, constant diameter, cylindrical electrodes which are modified to converge (for a positive polarity inner electrode and a negatively charged outer electrode) at the plasma output end of the annulus between the electrodes to achieve improved particle flux per unit of power.

20140158896, Jun 12, 2014

Mar 12, 2013

13/796597

Zhehui Wang - Los Alamos NM, US
Christopher L. Morris - Los Alamos NM, US
Jeffrey D. Bacon - Santa Fe NM, US

G01T 3/00

250389

A double-helix Boron-10 powder detector having intrinsic thermal neutron detection efficiency comparable to 36″ long, 2-in diameter, 2-bar Helium-3 detectors, and which can be used to replace such detectors for use in portal monitoring, is described. An embodiment of the detector includes a metallic plate coated with Boron-10 powder for generating alpha and Lithium-7 particles responsive to neutrons impinging thereon supported by insulators affixed to at least two opposing edges; a grounded first wire wound in a helical manner around two opposing insulators; and a second wire having a smaller diameter than that of the first wire, wound in a helical manner around the same insulators and spaced apart from the first wire, the second wire being positively biased. A gas, disposed within a gas-tight container enclosing the plate, insulators and wires, and capable of stopping alpha and Lithium-7 particles and generating electrons produces a signal on the second wire which is detected and subsequently related to the number of neutrons impinging on the plate.