Investigation of density structure of pseudorapidity fluctuations in interactions of Au 10.7 AGeV and Pb 158 AGeV nuclei with photoemulsion nuclei by Hurst method

Analysis of pseudorapidity fluctuations in interactions of 10.7 AGeV $_{79}Au^{197}$ and 158 A GeV $_{82}Pb^{208}$ nuclei with photoemulsion nuclei by Hurst method, is carried out. As result, events of explosive and mixed types, are discovered. These types have different fragmentation characteristics. The most events of the explosive type are processes of full destruction of projectile nucleus, in which multicharge fragments are absent. Events with several multicharge fragments of projectile nucleus are processes of mixed type. Moreover, these two types are separated in multiplicity distribution. Relative number of events of mixed type for 10.7 Au+Em interaction is significantly more than for 158 Pb+Em. Quantity of events of explosive type is approximately equal for both case.

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