OST Photonics GAGG(Ce) Scintillators

OST Photonics GAGG(Ce) Scintillators

GAGG(Ce) gadolinium gallium aluminum garnet is a new detection material for high-end CT and security equipment. It has the advantages of high density, high light output, short decay time, and low radioactive background. Besides, it has stable chemical composition, no cleavability and no hygroscopy, and is easy to process and assemble, which can be applied in the fields of radiation detection and high energy physics.

OST Photonics can supply gagg scintillator crystal, GAGG(Ce) scintillation screens and LYSO(Ce) arrays upon your requests. We can offer a variety of design options and different types of GAGG(Ce) crystal materials to meet the needs of customers for their applications.

Application of GAGG(Ce) Scintillators (GAGG:Ce Scintillators)

Gamma-ray detection

X-ray medical imaging

High energy physics

Positron Emission Tomography-Computed Tomography(PET-CT)

Single photon emission computed tomography(SPECT)

Advantages of GAGG(Ce) Scintillators (GAGG:Ce Scintillators)

High light output

High energy resolution

Fast decay time

No background

No hygroscopy

The Ability of OST Photonics

Maximum Size: ɸ60mm x 200mm

Available items: monolithic crystal, scintillation screen, pixellated array

Different Types of GAGG(Ce) Scintillators (GAGG:Ce Scintillators)

Type Light yield Decay time Afterglow

High light output type 54000 photons/keV <150 ns ≤0.10%@20ms

Low afterglow type 45000 photons/keV <70 ns ≤0.02%@20ms

Fast decay time type 30000 photons/keV <50 ns ≤0.10%@20ms

Balanced type 42000 photons/keV <90 ns ≤0.10%@20ms

Scintillation Screen Design Options of GAGG(Ce) Scintillators (GAGG:Ce Scintillators)

Freestanding ultra-thin scintillation screen.

Ultra-thin scintillation screens can be coupled to a substrate with optical adhesives in order to achieve better optical readout.

Scintillation screens can be inserted into frames(Aluminum or Stainless steel) for easier manipulation.

We can provide customized marking such as a grid, cross, or scale on the surface of the screen for easier beam visualization.

We can provide various coating on the surface of the screen upon request, such as reflection coatings(Al, Au, Ag, etc.), AR coating, diffusion painting(TiO2, Al2O3), and conductive coatings(Al, ITO, C).

Properties of GAGG(Ce) Scintillators (GAGG:Ce Scintillators)

Product Type High light output type Low afterglow type Fast decay time type Balanced type

Scintillation decay time (ns) ＜150 ＜70 ＜50 ＜90

Emission peak wavelength (nm) 520 520 520 520

Refractive index (peak wavelength) 1.9 1.9 1.9 1.9

Density (g/cm3) 6.6 6.6 6.6 6.6

Light yield (photoelectron /keV) 54 45 30 42

Energy resolution ( 137Cs) (5x5x5 mm) 6% 6% 7% 6%

Radiation hardness (rad) 10^5 10^5 10^5 10^5

Crystal structure Cube Cube Cube Cube

Cleavage plane No No No No

Hygroscopic No No No No

Mohs hardness 8 8 8 8

Afterglow ≤0.10%@20ms ≤0.02%@20ms ≤0.10%@20ms ≤0.10%@20ms