crystal single photon emission computed tomography(SPECT) ce doped yag

Product Overview

Description

Ce:YAG is used in PET scanners, high-energy gamma radiation and charged particle detectors, and high-resolution imaging screens for gamma, x-rays, beta radiation and ultraviolet radiation. 

Meta-Laser Ce:YAG Crystals:

 

· Could make ultrathinner screen down to 50micron

· Could provide various cerium doped concentration: 0.1%, 0.2%, 0.4%, 0.5%, 0.6%, 0.8%, 1.0%,1.2%;

· Could coat with 50nm Al or Au to avoid light sensitivity. 

Ce:YAG is a also be used as a phosphor. It emits yellow light when subjected to blue or ultraviolet light, or to x-ray light. It is used in white light-emitting diodes, as a coating on a high-brightness blue InGaN diode, converting part of the blue light into yellow. Ce:YAG is also used in some mercury-vapor lamps as one of the phosphors, often together with Eu:Y(P,V)O₄ (yttrium phosphate-vanadate). It is also used as a phosphor in cathode ray tubes, where it emits green (530 nm) to yellow-green (550 nm) light. When excited by electrons, it has virtually no afterglow (70 ns decay time). It is suitable for use in photomultipliers.

 

Ce:YAG crystals find its new application as phosphor for laser projector, laser headlight and high birghtness point source;

 

 

   · Excellent mechanical and chemical resistance

   ·  Suitable for high current operations

 ·  Decay time approx. 60 nanoseconds

 · Enable production ultra thin screens

 

 

·  Electron microscopy

·  Beta and X-ray counting

·  Electron and X-ray imaging screens

 

 

Polishing  Specification  for  Optical Grade
	Standard Precision	High Precision	Super Precision
Orientation Tolerence	< 1°	< 0.5°	< 0.2°
Thickness/Diameter Tolerance	±0.10 mm	±0.05 mm	±0.02 mm
Surface Flatness@633nm	<λ-2λ	<λ/2-λ/4	λ/4-λ/6
Wavefront Distortion	<(2-4)λ	<(1-2)λ	<(λ-λ/2)
Surface Quality	60/40	40/20	20/10
Parallel	45	1	10
Perpendicular	60	30	20
Clear Aperture	>90%
Chammfer	<0.2mm×45°
Coating	Available upon request

 

Key Parameter

 

1. Transmittance graph

 

 

2. Luminescence spectra of Ce:YAG crystals

 

3. Pulsed x ray excited and emitted decay curve