LSO(Ce) - Lutetium Oxyorthosilicate (Ce) Scintillator Crystal

Lutetium Oxyorthosilicate - Lu₂SiO₅(Ce) - is a relatively dense scintillator with a fast decay time (40ns). It is similar in performance to BGO but with a higher light yield.

LSO(Ce) scintillator crystal strengths:

Good stopping powers with Z - 75 and density - 7.4 g.cm³
No cleavage planes

LSO(Ce) scintillator crystals have the following issues which should be noted:

Has an intrinsic radiation background - c.300 cps/cm³
Quite brittle and needs careful handling and machining

Lutetium Oxyorthosilicate (Ce) - LSO(Ce) scintillator crystals are useful in diverse applications such as:

Positron Emission Tomography (PET)
Specialist applications in high energy, nuclear, space and medical physics

LSO(Ce) Scintillation Crystals - Optical Properties

Property	Units	Value
Wavelength (Max. Emission)	nm	420
Wavelength Range	nm	TBA
Decay Times	ns	40
Light Yield	photons/keV	30
Photoelectron Yield	% of NaI(Tl)	75
Radiation Length	cm	1.14
Optical Transmission	µm	TBA
Transmittance	%	TBA
Refractive Index		1.82@420nm
Reflection Loss/Surface	%	TBA
Neutron Capture Cross-section	barns	TBA

LSO(Ce) Scintillation Crystals - Mechanical Properties

Property	Units	Value
Chemical Formula		Lu₂SiO₅(Ce)
Density	g/cm³	7.4
Atomic Number (Effective)		75
Melting Point	ºC	2050
Thermal Expansion Coeff.	C⁻¹	TBA x 10⁻⁶
Cleavage Plane		None
Hardness	Mho	5.8
Hygroscopic		No
Solubility	g/100gH₂0	N/A

Sizes

Property	Value
Diameters	80 mm max.
Lengths	400mm max.

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