Scintillation Crystals and Detectors: NPWO

Scintillation Crystals and Detectors: NPWO


Scintillation Crystals and Detectors: NPWO

Scintillation crystals are materials that are commonly used in radiation detection and measurement. They work by converting the energy of incoming radiation (such as gamma rays or X-rays) into light, which can then be detected and measured using specialized equipment.

NPWO (NPO) is a type of scintillation crystal made from a sodium and potassium bismuth oxide compound. It has a high density and high atomic number, which makes it effective at detecting high-energy radiation such as gamma rays. NPWO scintillation crystals are also known for their high light output and fast response time, making them a popular choice in many applications.

Some common uses for NPWO scintillation crystals include radiation monitoring in nuclear power plants, medical imaging (such as in PET scanners), and environmental monitoring. They are also used in some types of particle detectors and in scientific research applications.

Crystal structure Tetragonal
Lattice constant( Å ) a=5,281, c=11,510
Melting point, °C 920
Density, g/cm3 7.57
Mohn hardness 4.9
Thermal expansion, 10-6/K
Refractive index 2.31
Emission wavelength (nm ) 520, Cherenkov eff.
Decay constant (ns ) 6
Radiation length (cm ) -
Hygroscopic No
Afterglow % at 6ms -
Effective atomic number
Light yield [photons/MeVy] 5% of BGO
Background, pulse/sec/kg
Crystal cleavage plane -

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