The system size problems are the important component of the multi-particle dynamics, which, however, is not sufficiently taken into account in the cosmic ray researches. Therefore, in addition to a broad and important program of new сollider and target experiments to study the interactions of protons with light nuclei, we propose to consider the features of multi-particle processes on light nuclei. In the work these problems are studied in the centrality selected interactions of light – (C, O, Ne) – (beam) and heavy – (Au, Pb) – (beam) ions with light – (C/N/O) – (target) and heavy – (Ag/Br) – (target) nuclei on the data of JINR-AGS-SPS target emulsion experiments with limited statistics. In order to reveal the possible system structure dependence, the analyses of E-by-E fluctuations on the longitudinal event shape and multiplicity are performed in two directions: on vertically, – for different (beam-target) pairs of nuclei under certain impact parameters, and on horizontally, – for the same (beam-target) pairs of nuclei on different impact parameters. The strong fluctuation enhancement for the central collisions of (C, O, Ne) – beam + (C/N/O) – target was interpreted as the sign of intrinsic virtual alpha-clustering in light nuclei.

The system size dependence for multiparticle processes has been recognized in both cosmic ray (“Stratosphere” collaboration) and at accelerator (“EMU” collaboration) experiments. The strong enhancement in multiplicity fluctuations for the most central light-light – (C, O, Ne) + (C/N/O) – collisions has been revealed at JINR-AGS-SPS energies. The sharp difference of light nuclear interactions are interpreted as the sign of intrinsic alpha-clustering in light nuclei.

Size-property relations in plasma-modified ZnO thin films have been investigated as a function of plasma treatment duration. The correlations between crystallite sizes and the morphological characteristics of films have been extracted on the basis of the frontier computational analysis of the scanning probe microscope (SPM) data matrices. The nanocluster structure of oxide films have been studied in detail with high accuracy. The strong plasma-induced changes in crystallite sizes have been interpreted as a size-structure phase transition. Direct measurements of X-ray diffraction and optical transmittance spectra have confirmed the results obtained with computational approaches. The discovery size-morphology correlations in thin oxide films might open new avenues ultimately leading towards deeper insight into unsolved problems of evaluation of optimal technological conditions for thin oxide film designing.

It is shown that experimental data on spike production differ in pp and p/K p interactions at 205 - 360 GeV/ . The rapidity distribution of spike centres exhibits two pe aks in pp, while it has one wide bump in p/Kp. The peaks are explained as coherent radiation of gluons at finite length. Due to interference phenomena, they are present in pp and practically absent in p/Kp.