Empirical Rules on the Attenuation of Quasifree Scattering in Nucleon-Deuteron Breakup in the Energy Range from 15 to 156 MeV

Abstract

Simple empirical rules are in existence on the (σ exp /σ s m ), the ratio of the experimental cross section for p-p and p-n quasifree scattering (QFS) to the one calculated with the spectator model. (1) The ratio for p-n QFS, (σ exp /σ s m ) p1–n2 , depends only on the relative energy E n2–p3 between scattered neutron and spectator proton, namely (σ exp /σ s m ) p1–n2 = f ( E n2–p3 ). (2) The ratio for p-p QFS, (σ exp /σ s m ) p1–n2 , depends on the relative energies E p1–n3 and E p2–n3 and is expressed by a product form of the same function for p-n QFS, namely (σ exp /σ s m ) p1–p2 = f ( E p1–n3 )× f ( E p2–n3 ). (3) Further, the function f ( E ) is expressed by the deuteron wave function in momentum space.