US 12,449,555 B2
CsI(T1) scintillator crystal including co-dopants antiomy and bismuth to reduce afterglow, and a radiation detection apparatus including the scintillation crystal
Fang Meng, Aurora, OH (US); and Peter R. Menge, Novelty, OH (US)
Assigned to Luxium Solutions, LLC, Hiram, OH (US)
Filed by LUXIUM SOLUTIONS, LLC, Hiram, OH (US)
Filed on Mar. 8, 2023, as Appl. No. 18/180,683.
Claims priority of provisional application 63/269,031, filed on Mar. 8, 2022.
Prior Publication US 2023/0305174 A1, Sep. 28, 2023
Int. Cl. G01T 1/202 (2006.01); C09K 11/75 (2006.01); G01N 23/046 (2018.01); G01N 23/083 (2018.01)
CPC G01T 1/202 (2013.01) [C09K 11/756 (2013.01); G01N 23/046 (2013.01); G01N 23/083 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A scintillator crystal comprising:
a cesium iodide host material;
a first dopant comprising a thallium, a molar concentration of said first dopant being less than 10%;
a second dopant comprising an antimony, wherein a concentration of the second dopant in the scintillator crystal is greater than 0.02 ppm and no greater than 1.3 ppm; and
a third dopant comprising bismuth, wherein a concentration of the third dopant in the scintillator crystal is greater than 0.027 ppm and no greater than 5.2 ppm, wherein the scintillator crystal has a reduced afterglow below 0.1% at 100 ms, and wherein an absolute light output is greater than 55000 ph/MeV.