What is PVT scintillator?
Among the types of these organic scintillator materials are Anthracene and Polyvinyltoluene (PVT) [4], which are pure organic compounds and are usually crystalline or in the form of a solution when dissolved with the addition of some substances that cause shafted in the wavelength of the scintillating light.
How do scintillator detectors work?
In scintillation detectors the material of the detector is excited to luminescence (emission of visible or near-visible light photons) by the absorbed photons or particles. The number of photons produced is proportional to the energy of the absorbed primary photon. The light pulses are collected by a photo- cathode.
What type of radiation is best detected by a scintillation counter?
A thin scintillator is an excellent choice for low-energy gamma rays and high-energy beta particles. The ray or particle will be absorbed within the thin scintillator and the light produced by this interaction will be able to pass through the remaining thickness to allow the gamma ray to be detected.
Which crystals make the best scintillators?
NaI (Tl) crystals make remarkable scintillators and can also be combined as custom built arrays: Cesium Iodide crystals doped with Thallium (CsI (Tl), like NaI (Tl) crystals, are inorganic alkali metal halide crystals grown in high temperature furnaces.
What is the brightest scintillator?
Thallium activated Cesium Iodide or CsI (Tl) crystals is one of the brightest scintillator. The maximum of the broad emission situated at 550nm is is well suited for photodiode readout. It has excellent mechanical properties, with a light yield four-times higher than that of BGO and a radiation length shorter than that of NaI (Tl).
What is the difference between Nai and CsI detectors?
On the other hand, CsI is less brittle than NaI and thereby may be subjected to more severe shock and vibration conditions than NaI detectors, is significantly less hygroscopic than NaI but more than BGO: FlashPoint can manufacture to meet your custom diameter and length requirements.
What is the energy resolution of CsI Tl crystal?
By using Cs 137, Co 60, Na 22 and Th 232 source, the energy resolution of 1″x1″x1″ cubic CsI:Tl crystal has been characterized, saying 7.3% (662KeV), 5.0/5.1% (1183/1346KeV), 8.3/5.6% (508/1269KeV) and 5.7/3.7% (1626/2664KeV).