Mixed halide scintillators radiation detection

Patent metadata

Field	Value
Publication number	US-11060024-B2
Application number	US-201916453569-A
Country	US
Kind code	B2
Filing date	Jun 26, 2019
Priority date	May 8, 2014
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

Mixed halide scintillation materials of the general formula AB (1−y) M y X′ w X″ (3−w) , where 0≤y≤1, 0.05≤w≤1, A may be an alkali metal, B may be an alkali earth metal, and X′ and X″ may be two different halogen atoms, and of the general formula A (1−y) BM y X′ w X″ (3−w) , where 0≤y≤1, 0.05≤w≤1, A maybe an alkali metal, B may be an alkali earth metal, and X′ and X″ are two different halogen atoms. The scintillation materials of formula (1) include a divalent external activator, M, such as Eu 2+ or Yb 2+ . The scintillation materials of formula (2) include a monovalent external activator, M, such as Tl + , Na + and In + .

First claim

We claim:

1. A scintillator comprising a chemical compound having the chemical formula
AB (1−3) /M y X′ w X″ (3−w) ,

wherein 0<y≤1,
0.05≤w≤1,
A is a combination of Cs and at least one selected from the group consisting of Li, Na, K, Rb, and In,
B is Mg, or B is a combination of two or more selected from the group consisting of Mg, Ca, Sr, and Ba,
M is Eu or Yb,
X′ is one of F, Cl, Br, I or any combination thereof, and
X″ is different from X′ and is one of F, Cl, Br, and I or any combination thereof.

2. The scintillator of claim 1 , wherein 0<y≤0.10.

3. A scintillator comprising a chemical compound having the chemical formula
AB (1−y) M y X′X″ 2

wherein 0<y≤1,
A is a combination of Cs and at least one selected from the group consisting of Li, Na, K, Rb, and In,
B is Mg, or B is a combination of two or more selected from the group consisting of Mg, Ca, Sr, and Ba,
M is Eu or Yb,
X′ is one of F, Cl, Br, I or any combination thereof, and
X″ is different from X′ and is one of F, Cl, Br, and I or any combination thereof.

4. The scintillator of claim 3 , wherein M is Eu.

5. The scintillator of claim 3 , wherein 0<y≤0.10.

Assignees

• Univ Tennessee Res Found

Inventors

• Stand Luis
• Melcher Charles L
• Zhuravleva Mariya
• Wei Hua

Classifications

• C09K11/628

  with alkali or alkaline earth metals · CPC title

• G21K4/00

  Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens (photographic processes using X-ray intensifiers G03C5/17; discharge tubes comprising luminescent screens H01J1/62; cathode ray tubes for X-ray conversion with optical output H01J31/50) · CPC title

• C09K11/7733 Primary

  with alkali or alkaline earth metals · CPC title

• G01T1/2023

  Selection of materials · CPC title

• C09K11/7705 Primary

  with alkali or alkaline earth metals · CPC title