Target Mass Dependence Research Articles

Attenuation in Proton Quasifree Scattering onH2,He3, andHe4

Application of the Rogers-Saylor attenuation model in proton quasifree scattering on $^{2}\mathrm{H}$, $^{3}\mathrm{He}$, and $^{4}\mathrm{He}$ is able to reproduce the strong energy and target-mass dependence of the ratio of experimental data to plane-wave impulse-approximation calculations.

The (p, 2p) reaction on 2H, 3He and 4He

The (p, 2p) cross sections on 2H, 3He and 4He were measured at 65, 85 and 100 MeV. The experimental data show rather strong energy and target mass dependence, particularly for 4He.

Secondary Particle Spectra from the Interaction of 30- to 340-MeV Protons on Complex Nuclei: Experimental Data and Comparison with Theory

A few serious discrepancies or anomalies exist in the measured neutron and proton spectra from the interaction of protons with nuclei in the 100-MeV energy region. These are: (1) the existence of a pronounced quasi-elastic neutron peak at small forward angles for 140-MeV incident protons and the unexplained absence of such a peak for 100-MeV protons; (2) a target-mass dependence of the measured neutron spectra at small angles from 160-MeV protons that is inconsistent with the 140-MeV data; and (3) an inconsistency in the shapes of some of the measured secondary-proton spectra. These discrepancies are illustrated, and comparisons with the theoretical predictions of an intranuclear-cascade calculation are made. However, the existence of the experimental discrepancies makes it difficult to evaluate the validity of any theoretical model which is used in the prediction of these data; therefore, additional experiments are needed.