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Sodium Bismuth Tungstate - NBWO - NaBi(WO₄)₂ is a relatively new scintillator material with a high

density,high radiation hardness and optical qualities.


NBWO scintillator crystals strengths:



NBWO scintillator crystals have the following issues which should be noted:



Sodium Bismuth Tungstate - NBWO - scintillator crystals are useful in diverse applications such as:







Properties

Optical/Scintillation

Units

Value

Wavelength (Max. Emission)

nm

540

Wavelength Range

nm

TBA

Decay Time

ns

20

Light Yield

photons/keV

TBA

Photoelectron Yield

% of NaI(Tl)

TBA

Radiation Length

cm

0.98

Optical Transmission

µm

TBA

Transmittance

%

TBA

Refractive Index


2.15 @520nm

Reflection Loss/Surface

%

TBA

Neutron Capture Cross-section

barns

TBA

Properties

Mechanical

Units

Value

Density

g/cm³

7.57

Atomic Number (Effective)


74

Melting Point

ºC

935

Thermal Expansion Coeff.

C⁻¹

TBA x 10‾⁶

Cleavage Plane


TBA

Hardness

Mho

6

Hygroscopic


No

Solubility

g/100gH0

N/A

NBWO Scintillation Crystals - Sizes


NBWO Scintillation Crystal - Properties


Diameters:  Up to 50 mm

Lengths:      Up to TBA mm






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Further Reading / Publications (Click for links)






NBWO - Sodium Bismuth Tungstate

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