Xiao X Zhou

US Patent:

8575750, Nov 5, 2013

Filed:

Jul 29, 2011

Appl. No.:

13/136374

Inventors:

Yongdong Zhou - Oak Ridge TN, US
Xiao Zhou - Oak Ridge TN, US

International Classification:

G01T 1/166
G01T 1/164

US Classification:

257741, 257E23092, 257442, 257 93, 257E31015, 257E21002, 25039004, 250366, 250369, 250255, 250362, 25036303, 25037011, 378159, 252513, 252500, 2525194

Abstract:

A radiation detector made of High Purity Germanium (HPGe) has been specially machined to be this invented multilayer Inter-Coaxial configuration. With this special configuration, extra large volume HPGe detectors of diameters to be 6 inches, 9 inches, and even 12 inches, can be produced with current achievable HPGe crystal purity and quality, in which the entire detector crystal will be depleted and properly over biased for effective photo-induced signal collection with just less than 5000V bias applied. This invention makes extra large efficiency of 200%, 300%, and maybe even higher than 500% possible with HPGe gamma ray detectors with reasonable great resolution performances procurable based on current HPGe crystal supply capability. The invention could also be applied to any other kind of semiconductor materials if any of them could be purified enough for this application in the future.

US Patent:

20170274826, Sep 28, 2017

Filed:

Mar 28, 2016

Appl. No.:

14/999072

Inventors:

Yongdong Zhou - Oak Ridge TN, US
Xiao Zhou - Oak Ridge TN, US
Jianhua Wan - Oak Ridge TN, US

International Classification:

B60R 1/08
B60R 1/04

Abstract:

This invention of special rear view mirror structures gives a complete unabridged wide rear view field of both untwisted and twisted image zones that better helps the drivers safely operating their cars and trucks in all kinds of situations.

US Patent:

20150228826, Aug 13, 2015

Filed:

Feb 10, 2014

Appl. No.:

13/999310

Inventors:

Yongdong Zhou - Oak Ridge TN, US
Xiao Zhou - Oak Ridge TN, US
Jianhua Wan - Oak Ridge TN, US

International Classification:

H01L 31/0352
H01L 31/118
H01L 31/117
H01L 31/028
H01L 31/0224

Abstract:

A High Purity Germanium (HPGe) radiation detector has been specially machined to be this invented series multi-chamber coaxial configuration. So extra-large volume HPGe detectors can be easily produced with current available HPGe crystal, and the entire detector body structure can be uniquely optimized in accordance with the exact semiconductor crystal ingot situation so the overall detector can be easier depleted and the photo-induced carriers can be better collected as the signal output. This invention makes extra-large efficiency HPGe gamma ray detectors of 100% to 200%, and maybe even higher efficiency, possible and easier to be produced based on current HPGe crystal supply capability. The invention improves the detector performance for very high energy gamma ray detection especially. The invention could also be applied to any other kind of semiconductor materials if any of them could be purified enough for this application in future.