BGO & LYSO Crystals
Scintillators BGO & LYSO
We develop and manufacture a range of scintillator crystals that can be used in radiation detector modules for medical imaging, industrial CT, medically XCT, Positron emission tomography (PET), high energy physics, security scanning, oil well logging, and research applications.
We offer the service of volume crystal growth, volume fabrication, detector array & module assemble and crystal development.
The comparison of the properties of BGO & LYSO
| Properties | GSO | BGO | LYSO |
| Density (g/m3) | 6.7 | 7.13 | 7.3 |
| Melting Point ( ° C) | 1900 | 1050 | 2047 |
| Index of Refraction | 1.87 | 2.15 | 1.82 |
| Radiation Length (cm) | 1.38 | 1.10 | 1.16 |
| Attenuation （cm-1） | 0.67 | 0.96 | 0.87 |
| Decay Constant (ns) | 50 | 300 | 50 |
| Light Yield (%) Nal (T1) | 35 | 25 | 75 |
| Photofraction（%） | 25 | 40 | 30 |
| Energy Resolution (511 kev,%) | 12 | 16 | 8 |
| Radioactivity | No | No | Yes |
Applications:
Gamma-ray and X-ray detectors such as PET, well logging and high energy physics.
| Features | Requirements of scintillation crystals |
| Stopping power | Dense and high absorption coefficient for gamma-ray. |
| Scintillation properties | High light output and short decay time, colorless and clear |
| Uniformities | Excellent energy resolution and uniform light output. |
| Temperature response | Small
decrease in light output at
|
| Radiation hardness | Almost no degradation in scintillation properties at 10*6 gray. |
BGO Crystal
Bismuth germinate Bi4Ge3O12 commonly abbreviated as BGO, is the crystalline form of an inorganic oxide with cubic eulytine structure, colorless, transparent and insoluble in water. When exposed to radiation of high energy particles or other sources, such as gamma-rays, x-rays, it emits a green fluorescent light with a peak wavelength of 480nm, with its high stopping power, high scintillation efficiency, good energy resolution and non-hygroscopes, BGO is a good scintillation material and has found a wide range of applications in high energy physics, nuclear physics, space physics, nuclear medicine, geological prospecting and other industries.
Specification
| Diameter | 2 ” or 3 ” |
| Length | 1 ” or 6 ” |
| Orientation | <110> , <100>, <001> |
Physical Properties Of BGO
| Density (g/m3) | 7.13 |
| Melting point ( ° C) | 1050 |
| Parameter of crystal cell (A) | 10,518 |
| Refractive index | 2.15 |
| Radiation length (cm) | 1.1 |
| Peak of fluorescence spectra (nm) | 480 |
| Decay time (ns) | 300 |
| Relative light output (%) | 10-14Nal (T1) |
| Energy resolution (511 kev,%) | 20 |
LYSO Crystal
LYSO crystal is an ideal generation sintillator crystal. LYSO stand for Cerium doped Lutetium Yttrium Orthosilicate. LYSO crystal has the advantages of high light output, high density, fast decay time, good energy resolution and low cost. These properties mean that LYSO is an ideal candidate for a range of ray detection applications in nuclear physics and nuclear medicine, which require higher though improved timing resolution and superior energy revolution.
Sinoceramics, Inc. can produce LYSO in high volume and can supply finished pixel or assembled customer specified array or module configurations.
Physical Properties Of LYSO
| Density (g/cm3) | 7.4 |
| Effective Atomic Number | 66 |
| Radiation Length (cm) | 1.10 |
| Decay Constant (ns) | 40-44 |
| Peak Emission (nm) | 428 |
| Light Yield (Relative BGO=100%) | 190 |
| Index of Refraction | 1.82 |
| Peak excitation (nm) | 375 |
| Radiation Hardness (rad) | >106 |
| Melting Point (degree C) | 2050 |
| Hardness (Mohs) | 5.8 |
| Cleavage | None |
| Hygroscopicity | No |
Tel: +86-21-64384700 email: info@sinocera.net