Lorentzian

adjective

Lo·rentz·ian

(ˌ)lōˈrentsēən,

(ˌ)lȯˈ-

: of, relating to, or being a function that relates the intensity of radiation emitted by an atom at a given frequency to the peak radiation intensity, that gives the distribution of the frequencies emitted, that resembles a normal curve but builds up and drops off more gradually, and that has the form I(ν) = I₀ (γ/2π) / ((ν - ν₀)² + (γ/2)²) where I is the radiation intensity, ν is the frequency, I₀ is the peak intensity, γ is the width of the distribution, and ν₀ is the frequency of peak intensity