High transmittance single crystal YAP scintillators
AssigneeCrytur
InventorsJan Kubat, Jan Polak, Martin Klejch, Tomas Marek
Life of this patent
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Abstract
A single crystal yttrium aluminum perovskite scintillator has a minimum thickness of at least 5 mm and a transmittance of at least 50% at a wavelength of 370 nm. A method for fabricating the yttrium aluminum perovskite scintillator includes acquiring a yttrium aluminum perovskite single crystal boule, annealing the yttrium aluminum perovskite single crystal boule in an oxygen containing environment to obtain a partially annealed crystal, and annealing the partially annealed crystal in an inert environment or a reducing environment to obtain the yttrium aluminum perovskite single crystal scintillator.
Claims26
A method for fabricating a yttrium aluminum perovskite single crystal scintillator, the method comprising:
- (a) acquiring a yttrium aluminum perovskite single crystal body having a thickness of at least 5 mm;
- (b) annealing the yttrium aluminum perovskite single crystal body in an oxygen containing environment to obtain a partially annealed crystal;
- and
- (c) annealing the partially annealed crystal in an inert environment or a reducing environment to obtain the yttrium aluminum perovskite single crystal scintillator having a transmittance of at least 50% at a wavelength of 370 nm.
A method for fabricating a downhole nuclear logging tool, the method comprising:
- (a) annealing a yttrium aluminum perovskite single crystal body having a thickness of at least 5 mm in an oxygen containing environment to obtain a partially annealed crystal;
- (b) annealing the partially annealed crystal in an inert environment or a reducing environment to obtain a yttrium aluminum perovskite single crystal scintillator having a transmittance of at least 50% at a wavelength of 370 nm;
- and
- (c) deploying the yttrium aluminum perovskite single crystal scintillator in a downhole logging tool body to obtain a nuclear logging tool having a gamma ray detector.
A method for fabricating a yttrium aluminum perovskite single crystal scintillator, the method comprising:
- forming a yttrium aluminum perovskite single crystal boule to have a minimum thickness of at least 5 mm and a transmittance of at least 50% at a wavelength of 370 nm, the forming including at least one step of annealing.
Dependencies are inferred from the claim text.