plastscintillatorer

Plastscintillatorer, often shortened to plastic scintillators, are solid organic materials that emit light when struck by ionizing radiation. These materials are typically composed of a polymer matrix, such as polystyrene or polyvinyltoluene, which serves as a host for dissolved fluorescent molecules called primary and secondary fluors. When ionizing radiation, like alpha particles, beta particles, or gamma rays, interacts with the polymer, it excites the polymer molecules. This excitation energy is then transferred to the primary fluor, which re-emits it as photons, typically in the ultraviolet range. This UV light is then absorbed by the secondary fluor, which re-emits it at a longer wavelength, usually in the visible spectrum, making it detectable by photomultiplier tubes or silicon photodiodes.

The primary advantage of plastic scintillators is their rapid response time, which allows for high count rate measurements. They are also relatively inexpensive to manufacture and can be fabricated into various shapes and sizes, making them versatile for different applications. However, their light output is generally lower compared to inorganic scintillators, and they can be susceptible to radiation damage over time. Plastscintillatorer are widely used in particle physics experiments, radiation detection equipment, homeland security applications such as baggage scanners, and medical imaging. Their ability to be molded into large volumes makes them ideal for detecting weakly interacting particles or for use as large area detectors.