RARE-EARTH MATERIALS, SCINTILLATOR CRYSTALS, AND RUGGEDIZED SCINTILLATOR DEVICES INCORPORATING SUCH CRYSTALS
First Claim
1. A rare-earth halide material comprising a first surface region having a first surface roughness (Rrms1) and a second surface region having a second surface roughness (Rrms2), wherein the first surface roughness value is at least about 10% less than the second surface roughness value, wherein surface roughness is measured using scanning white light interferometry over an area of 1 mm2.
1 Assignment
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Accused Products
Abstract
A rare-earth halide material comprising a first surface region having a first surface roughness (Rrms1) and a second surface region having a second surface roughness (Rrms2), wherein the first surface roughness value is at least about 10% less than the second surface roughness value, wherein surface roughness is measured using scanning white light interferometry over an area of 1 mm2.
57 Citations
87 Claims
- 1. A rare-earth halide material comprising a first surface region having a first surface roughness (Rrms1) and a second surface region having a second surface roughness (Rrms2), wherein the first surface roughness value is at least about 10% less than the second surface roughness value, wherein surface roughness is measured using scanning white light interferometry over an area of 1 mm2.
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32. A scintillator crystal comprising:
a scintillator crystal body comprising a rare-earth halide material and having a hexagonal crystal structure, the scintillator crystal body further comprising a surface region having a surface roughness (Rrms1) within a range between about 1 micron and about 10 microns, wherein surface roughness is measured using scanning white light interferometry over an area of 1 mm2. - View Dependent Claims (33, 36, 37)
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34. (canceled)
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38-81. -81. (canceled)
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82. A scintillator device comprising:
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a housing; a scintillator crystal contained within the housing, wherein the scintillator crystal comprises a hexagonal crystal structure and a surface area;
volume (SA;
V) ratio of not greater than about 1, wherein the surface area and volume are measured in centimeters; anda sleeve surrounding a portion of the scintillator crystal and exerting a radially compressive pressure on the scintillator crystal, wherein the scintillator crystal withstands a cooling rate of at least about 2°
C./min over a temperature range of not greater than about 200°
C. to an ambient temperature without cracking - View Dependent Claims (83, 84, 85, 86)
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87-100. -100. (canceled)
Specification