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. 03, 2020
Filed:
Feb. 10, 2016
National University Corporation Hokkaido University, Sapporo-shi, Hokkaido, JP;
Masayori Ishikawa, Sapporo, JP;
Ryo Ogawara, Sapporo, JP;
National University Corporation Hokkaido University, Sapporo-shi, Hokkaido, JP;
Abstract
The present invention identifies α decay and other events included in the emission of an LaBrscintillator and only collects γ ray events. An LaBrscintillation detector is provided with an LaBr3 scintillator, a photomultiplier tube, an oscilloscope, and a computer. The computerdetects a peak value Vp and a total charge amount Qof a voltage waveform signal and calculates an error propagation expression function for a ratio of the peak value Vp to the total charge amount Q. This error propagation expression function is used as a threshold function for identifying and removing α decay events. The α decay events are identified from the peak value Vp and total charge amount Q, which are measurement values that can be measured in real time.