BGO, LYSO and GSO Crystal Scintillators

Our selection of scintillator crystals offers solutions to a wide range of applications, including the following:

Radiation detector modules for medical imaging
Industrial CT
Medically XCT
Positron emission tomography (PET)
High energy physics
Security scanning
Oil well logging
Various research applications

Additionally, we can offer a variety of related services, such as:

Volume crystal growth
Volume fabrication
Detector array
Module assembly
Crystal development

Properties Comparison for BGO, LYSO, GSO

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	20
Radioactivity	No	No	Yes

Applications

Gamma-ray and X-ray detectors such as PET, well logging, and high energy physics applications.

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 100°C
Radiation hardness	Almost no degradation in scintillation properties at 10*6 gray.

BGO Crystal

BGO, (Bismuth germinate Bi4Ge3O12) is the crystalline form of an inorganic oxide with cubic eulytine structure, colorless, transparent, and insoluble in water. When it is exposed to radiation of high energy particles or gamma-rays, x-rays, it emits a green fluorescent light with a peak wavelength of 480nm. With its elevated stopping power, high efficiency scintillation, first-rate energy resolution and non-hygroscopes, BGO is an excellent scintillation material and is ideal for 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

GSO Crystal

GSO single crystals possess greater energy resolution, quick decay time, large light output, as well as rapid and high precision radiation detection. These properties allow it to be used as a scintillator in Positron Emission Tomography (PET) and other medical imaging equipment.

Physical Properties of GSO

Density (g/cm³)	6.7
Melting Point (°C)	1900
Radiation Length (cm)	1.38
Decay Constant (ns)	50-60
Light Yield (relative BGO=100%)	110
Index of Refraction	1.87
Peak Excitation (nm)	350
Radiation Hardness (rad)	>106
Hardness (Mohs)	5.7
Hygroscopic	No

LYSO Crystal

LYSO crystal is an ideal generation scintillator crystal. LYSO (Cerium-doped Lutetium Yttrium Orthosilicate.) LYSO crystal has the advantages of high light output and density, quick decay time, excellent energy resolution and low cost. These properties make LYSO an ideal candidate for a range of ray detection applications in nuclear physics and nuclear medicine, which require higher, improved timing resolution and superior energy revolution.

We can provide LYSO in any volumes required and can supply finished pixel or pre-assembled customer-specific arrays 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 (°C)	2050
Hardness (Mohs)	5.8
Cleavage	None
Hygroscopicity	No