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.
Fluorescence is glowing, or giving off light.
Ionizing radiation
fluorescence
Scintillation
The glow emitted by a substance exposed to external radiation is called fluorescence (Penn Foster page 64 of the Light Study Guide.
A spectrometer shoots light through a sample and detects absorbance while a fluorimeter detects the intensity of fluorescence of a given sample.
flourescence is more sensetive than UV detection
one Major difference is confocal microscopy has confocality which means it reduces the background signal which is not presented in conventional fluorescence microscope usually termed as epifluorescence microscope
RIA measures scintillation due to decay of radioactive tracer. ELISA measures a color change due to an enzyme tracer.
Raman scattering involves the SCATTERING of electromagnetic radiation by molecules, not atoms Fluorescence emission follows an absorption process
the main detector of a scintillation counter depends on the calculating factor that you depict on using in your scintillation.
phenolphthalein will have a greater quantum yield because dissolved oxygen can reduce the fluorescence intensity
Abrupt changes in the frequency cause mostly by abrupt variation in load is frequency scintillation.
Fluorescence is a property not a mineral.
Fluorescence is visible after UV irradiation; some substances as phosphates enhance the uranium fluorescence. Other substances can quench the uranium fluorescence.
The principle of fluorescence spectroscopy is the interaction with light image.
Scintillation counter