Dissociation of relativistic nuclei in peripheral interactions in nuclear track emulsionD. A. Artemenkov, P. I. Zarubin, G. I. Orlova
7 P.
arXiv:nucl-ex/0604007, v2, 24 Apr, 2006.
Possibilities of the nuclear emulsion technique for the study of the systems of several relativistic
fragments produced in the peripheral interactions of relativistic nuclei are discussed. The interactions of 
the 
 and 
 nuclei in emulsion are taken as an example to 
show the manifestation of the cluster degrees of freedom in relativistic fragmentation. For the case of the relativistic 
 nucleus dissociation it is shown that exact angular measurements play a crucial role in the restoration
of the excitation spectrum of the alpha particle fragments. The energy calibration of the angular
measurements by the 
 nucleus enables one to conclude reliably about the features of internal
velocity distributions in more complicated systems of relativistic 
-particles.