The present Atlas is a supplement to the author’s lecture courses available online. It reviews various experiments on inelastic scattering of polarized protons. The Atlas is aimed at providing a clear explanation of modern experiments related to the spin of protons at the excitation of the 2⁺ and 4⁺states in the ^90,92Zr and ⁹²Mo nuclei.

Neutron transition densities measured with proton scattering provide information complementary to proton densities measured with electron scattering. The resulting data can provide important tests of the shell model.

A simple approach allows us to differentiate proton and neutron transition densities at nuclear excitation. Thus, for isoscalar states, due to symmetry principles, they can be considered similar in shape.

While in Atlas of Data 2 the discussion of the (p,p’) scattering results began with the excitation of low-lying 2⁺ states, here in Atlas of Data 3, a similar consideration covers the corresponding nuclear levels 4⁺ in the same nuclei near N = 50. In addition, in Atlas 3, we discuss the manifestation of the excitation structure in the same nuclei, but for both 2⁺ and 4⁺ states. In this case, the nuclear structure is demonstrated based on the representation of effective transition densities as the most reliable method.

Atlas of Data 3 is a continuation of the previously published Atlas of Data 2. Here we consider specific spin manifestations of inelastic scattering of polarized protons from nuclei near N = 50. For this study, theoretical transition densities are very important. However, to create a nuclear empirical shell model, their experimental equivalents for protons and neutrons in nuclei are also necessary. The material is illustrated with examples of the  scattering analysis at low and intermediate proton energies.

Transition densities are divided into proton and neutron components. The former were obtained from electron scattering experiments, and the latter – from intermediate-energy proton scattering. Experimental neutron densities were determined using a tested system of empirical effective proton-nucleus interactions.

Atlas of Data 3 consists of three sections. Section 1 considers surface variations of transition density in inelastic scattering of polarized protons from nuclei near N = 50. Section 2 discusses the empirical shell model in the (e, e’), (p,p’), (π^±, π^±’), and  processes. Finally, Finally, Section 3 reviews the role of neutron and proton transition densities for nuclei near N = 50.