A NEW REPRESENTATION OF BEAM TRANSPORT THEORY

By means of the representation transformation,a quantum phase space distribution function withTwiss parameters is introduced,which is appropriate to the beam transport theory. Since the function is solved from Schrodinger's equations, a new approach to treat the beam transport problem in the case of nonlinear force occurs. As for the optical beam transmision,it provides a possibility to introduce the diffraction modification into the geometrical optics as well.