Elsevier

Nuclear Physics B

Volume 30, Issue 1, 1 July 1971, Pages 77-115
Nuclear Physics B

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

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Abstract

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.

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    • Cited by (0)

    ☆

    The work was supported by the US National Science Foundation and the US Atomic Energy Commission.

    ∗∗

    Now at CERN, Geneva, Switzerland.

    ∗∗∗

    Now at St Louis University, St. Louis, Missouri, 63103.

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