In this paper, an exactly solved model for the emission by N atoms is prese
nted, the spontaneous and induced transition rates obtained, are enhanced b
y a factor which is proportional to the number of atoms n in the volume lam
bda(3)/(2 pi(2)) (lambda is the transition wavelength of the atom) and depe
ndent on the de-Broglie wavelength lambda(B) in a more complicated way.