Elsevier

Nuclear Physics A

Volume 324, Issues 2–3, 30 July–6 August 1979, Pages 253-265
Nuclear Physics A

Quasi-free collisions of 400 MeV protons in deuterium and carbon

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Abstract

The first results from a program to compare quasi-free proton and neutron knockout from nuclei are presented. The binding energy of the s and p neutron hole states in 12C have been obtained. Relative cross sections for proton and neutron knockout from 2H and 12C were determined for two very different kinematical conditions. The ratio, R of σ(p, pn) to σ(p, 2p) is in agreement with estimates based on the impulse approximation for 2H but there is a deviation for 12C. These observations suggest that refinements will have to be made to the theoretical ideas used to analyze quasi-free knockout reactions.

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