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A wavelength shifter is a component used in some organic scintillators. These scintillators emit light when struck by ionizing radiation. A wavelength shifter absorbs this primary light and re-emits it at a longer wavelength, which is better suited for detection by instruments like photomultiplier tubes. This process helps to improve the efficiency of radiation detection. Organic scintillators can be in liquid, plastic, or crystal form and are known for their fast response times, making them useful for precise measurements.123

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