 This may be compared to the typical neutron velocity of 200..1000 m/s used in these type of experiments.Many inelastic studies that use normal time-of-flight (TOF) or backscattering spectrometers rely on the huge incoherent neutron scattering
cross section of protons.The scattering signal is dominated by the corresponding contribution, which represents the (average) self-correlation
function (in time) of the protons.