Neutron-nuclei total cross sections at 27 GeV/c

The total cross sections for 27 GeV/c neutrons on eight heavy elements, Be through U, has been measured and found to obey the empirical relationship [sigma]T = 48A0.75mb.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/33126/1/0000512.pd

Neutron-proton elastic scattering from 5 to 30 GeV/c

The differential cross section for neutron-proton elastic scattering was measured in the diffraction region with incident neutron momenta between 5 and 30 GeV/c. The experiment was an optical-spark-chamber-counter experiment conducted at the Brookhaven National Laboratory alternating gradient synchrotron. A well collimated neutron beam with a broad energy spectrum was incident on a liquid hydrogen target. The scattered neutrons were detected in a thick-plate spark-chamber array while the recoil protons were detected and momentum analyzed in a magnetic spectrometer with thin-foil spark chambers.The results indicate that the neutron-proton cross sections are very similar to but not identical with the proton-proton cross sections. The diffraction peak in the neutron-proton system does show shrinkage with increasing incident momentum but exhibits no auxiliary structure.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/33615/1/0000122.pd