LYSO(Ce) Scintillator Crystal

LYSO(Ce) - Lutetium Yttrium Orthosilicate (Lu₂SiO₅:Ce)is a relatively new scintillator crystal with a high density, high light output, short decay time and good radiation hardness characteristics.

LYSO(Ce) scintillator crystals advantages:

Good light output - 70% of NaI(Tl), 25 photons/keV
High density - 7.15 g/cm³
Fast decay times - c.45ns
Energy resolution - <12%
Not hygroscopic
Are relatively inexpensive

Issues to be aware of:

Mechanically brittle

LYSO(Ce) - is a useful scintillator for applications such as:

Time-of-Flight measurements
Industrial/Medical CT/XCT
Positron Emission Tomography (PET)
Those looking to discriminate between gamma rays and neutrons
Specialist applications in nuclear and high energy physics

LYSO(Ce) Scintillation Crystals - Optical Properties

Property	Units	Value
Wavelength (Max. Emission)	nm	410
Wavelength Range	nm	TBA
Decay Times	ns	40
Light Yield	photons/keV	25
Photoelectron Yield	% of NaI(Tl)	75
Radiation Length	cm	1.1
Optical Transmission	µm	TBA
Transmittance	%	TBA
Refractive Index		1.82@410nm
Reflection Loss/Surface	%	TBA
Neutron Capture Cross-section	barns	TBA

LYSO(Ce) Scintillation Crystals - Mechanical Properties

Property	Units	Value
Chemical Formula		Lu₂SiO₅:Ce
Density	g/cm³	7.15
Atomic Number (Effective)		65
Melting Point	ºK	2070
Thermal Expansion Coeff.	C⁻¹	7.0 x 10⁻⁶
Crystal Structure		Mono
Hardness	Mho	5.8
Hygroscopic		No
Solubility	g/100gH₂0	N/A

Sizes

Property	Value
Diameters	90 mm max.
Lengths	200mm max.

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