The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2014
Filed:
Feb. 21, 2012
Nathan J. Withers, Albuquerque, NM (US);
Marek A. Osinski, Albuquerque, NM (US);
Gennady A. Smolyakov, Albuquerque, NM (US);
Nathan J. Withers, Albuquerque, NM (US);
Marek A. Osinski, Albuquerque, NM (US);
Gennady A. Smolyakov, Albuquerque, NM (US);
STC.UNM, Albuquerque, NM (US);
Abstract
A neutron irradiation history sensor and detection method for detection of thermal neutrons exploit transmutation ofDy intoHo andEr and significant differences in optical properties of Dy, Ho, and Er in order to enable detection of relative fractions of Dy, Ho, and Er and thus the degree and timing of prior thermal neutron exposure that has occurred, providing a tamper-proof forensic record of the prior thermal neutron exposure. The irradiation history sensor and detection method advantageously employ Dy-containing nanocrytals (NCs) residing in a transparent host.