This manuscript investigates the effect of the chirp factor on the relativistic self-focusing of a Gaussian chirped pulse laser in collisional quantum plasmas. Nonlinear equations are derived to describe the propagation of a linear chirped laser frequency; afterward. by considering dielectric function obtained by quantum kinetic equation and BGK collision integral in coordinate space.... https://www.bekindtopets.com/great-pick-Nobivac-Feline-1-HCPCh-special-find/