Quantum Collision Theory

angle angular assume atomic becomes Born approximation bound calculation called channel Chapter collision complete condition consider coordinates corresponding Coulomb defined denote depends described differential cross section direction discussion effects eikonal elastic scattering electron energy equation example expression fact final follows formula given given by eq Hamiltonian Hence identical important incident initial integral interaction introduce laboratory mass matrix element method momentum namely normalization obtained operator optical partial wave particles particular phase shifts Phys physical plane poles positive potential principle problem processes quantity quantum Quantum Mechanics radial range reaction reduced region relation relative representation resonance respectively result satisfy scattering amplitude Schrödinger simple solution space spin theory transition two-body unit values variables variational vector wave function write yields York