# I'm looking for a formal definition of 'scintillations' in laser beam propagation

I'm trying to make a scintillometer, based on Rytov's method. I've understood the whole phenomenon, and gone through some of the research papers in the field. But, I haven't encountered any definition as such. I was wondering whether there is any formal definition available.

• I'm not sure, I understand your question but here is the wiki page for scintillations. Jul 14, 2015 at 10:01

SCINTILLATION:

$\bullet$ The evaluation of the intensity fluctuations of the transmitted signals of a scintillometer.

$\bullet$ A rapid apparent displacement of a target indication from its mean position on a radar display; one cause is shifting of the effective reflection point on the target. (I myself don't like this second one though)

$\bullet$ A brief ($\approx 10^{–4} \to 10^{–9}\text{sec}$) flash of light that occurs in a scintillator under the action of ionizing radiation.

A link which you may find useful: scintillation