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:
Nov. 10, 2015
Filed:
Mar. 19, 2012
Akio Urushiyama, Tokyo, JP;
Yuji Tomizawa, Saitama, JP;
Akio Urushiyama, Tokyo, JP;
Yuji Tomizawa, Saitama, JP;
RIKKYO GAKUIN, Tokyo, JP;
Abstract
The present invention provides a thermoluminescent phosphor for obtaining a two-dimensional or three-dimensional dosimeter for measuring dose absorbed by biological tissues, which phosphor has superior handleability, superior biological tissue equivalence, and superior precision. It is produced by a method comprising (A1) mixing LiBO, BOand MnO, (A2) firing the mixture at 770 to 840° C., and (A3) obtaining the thermoluminescent phosphor comprising lithium triborate as a base material and manganese as a luminescent center present in the base material by further adding and mixing LiBOinto the fired product and then firing the mixture at 770 to 840° C., wherein the molar ratio of LiBO:BOin A1 is 1:X (1<X≦4), MnOis 0.02 to 1.0 mass % relative to the total mass of the BOand the total amount of the LiBOadded in A1 and A3, and LiBOin A3 is (X-1) mol relative to 1 mol of the BO.