Title: Chloride, bromide and iodide scintillators with europium doping

Abstract

A halide scintillator material is disclosed where the halide may comprise chloride, bromide or iodide. The material is single-crystalline and has a composition of the general formula ABX.sub.3 where A is an alkali, B is an alkali earth and X is a halide which general composition was investigated. In particular, crystals of the formula ACa.sub.1-yEu.sub.yI.sub.3 where A=K, Rb and Cs were formed as well as crystals of the formula CsA.sub.1-yEu.sub.yX.sub.3 (where A=Ca, Sr, Ba, or a combination thereof and X=Cl, Br or I or a combination thereof) with divalent Europium doping where 0.ltoreq.y.ltoreq.1, and more particularly Eu doping has been studied at one to ten mol %. The disclosed scintillator materials are suitable for making scintillation detectors used in applications such as medical imaging and homeland security.

Inventors:

Zhuravleva, Mariya; Yang, Kan

Issue Date:

2014-08-26

Research Org.:

Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1151782

Patent Number(s):

8815119

Application Number:

13/351,748

Assignee:

University of Tennessee Research Foundation (Knoxville, TN)

Patent Classifications (CPCs):

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

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C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C04B2235/3215 - Barium oxides or oxide-forming salts thereof

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

C09K11/7791 - {with alkali or alkaline earth metals}

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C04B2235/3213 - Strontium oxides or oxide-forming salts thereof

C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH

C30B11/00 - Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C04B35/5152 - {based on halogenides other than fluorides}

C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH

C30B29/12 - Halides

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C04B2235/3224 - Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
C04B2235/3208 - Calcium oxide or oxide-forming salts thereof, e.g. lime
C04B2235/3201 - Alkali metal oxides or oxide-forming salts thereof
C04B35/6455 - {Hot isostatic pressing}
C04B2235/9653 - Translucent or transparent ceramics other than alumina

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

C09K11/7733 - {with alkali or alkaline earth metals}

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DOE Contract Number:  

NA0000473

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY