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Both are forms of luminescence that result from the absorption of energy from a particular source and then re-emit light during the de-excitation of the electrons within the material in question occurs. The difference lies in what the source of this energy is.
Scintillation is the result of the absorption of energy from ionized radiation.
Fluorescence is the result of the absorption of energy from strictly, electromagnetic radiation.
For instance, if you shoot an electron or an alpha particle through a material and the result is a glowing substance, then scintillation is occurring. If you just shine light ata material and it re-emits light, then it's fluorescence.
Since high energy photons, gamma radiation, can generate scintillation and photons are electromagnetic in nature, then it is possible to say that in this instance, scintillation is fluorescence.
Both re-emit light that is generally of less energy than the energy the material is absorbed.
E = hv where E is Energy, h is Plank's constant, and v is frequency.
Given c=wv where w is the wavelength then Energy is inversely proportional to the wavelength of light.
E = hc/w
So the less energy, the larger the wavelength or longer the wavelength is emitted.
This would suggest a red shift in the re-emission process.
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Ezra
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ViviFluorescence occurs when a material absorbs light energy and re-emits it at a longer wavelength, while scintillation produces flashes of light when ionizing radiation interacts with a crystal material. Fluorescence typically involves lower energy transitions within atoms or molecules, whereas scintillation involves higher energy interactions that produce visible light.
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What is the difference between fluorescence and phosphorescence?
Fluorescence and phosphorescence are both processes where a substance absorbs and then emits light. The key difference is in the timing of the light emission. Fluorescence happens almost immediately after the substance absorbs light, while phosphorescence involves a delay in the emission of light, which can last from milliseconds to hours.
What is the difference between phosphorescence and fluorescence?
Phosphorescence and fluorescence are both types of light emission, but they differ in how long they last. Fluorescence is a quick emission of light that stops as soon as the light source is removed, while phosphorescence continues to emit light for a period of time after the light source is removed.
What type of radiation is best detected by a scintillation counter?
Gamma radiation is best detected by a scintillation counter due to its ability to interact with scintillation materials and produce light pulses that can be detected.
What is Relative Fluorescence Intensity?
Relative fluorescence intensity is a measure of the amount of fluorescence emitted by a sample compared to a reference sample. It is often used in fluorescence spectroscopy to quantify the fluorescence signal from a sample relative to a standard for comparison and analysis.
How do you calculate the relative intensity of fluorescence?
The relative intensity of fluorescence can be calculated by dividing the fluorescence intensity of the sample of interest by the fluorescence intensity of a reference standard under the same conditions. This ratio provides a measure of the relative fluorescence properties of the sample compared to the reference standard.
