Peripheral fragmentation of relativistic ¹¹B nuclei in photoemulsion

2006/10/17 by D. A. Artemenkov, Artemenkov, D. A., V. Bradnova +19
Physics and Astronomy · #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #nucl-ex

paper · pdf · doi:10.48550/arxiv.nucl-ex/0610023

11 pages, 6 figures, 3 tables, 9th International Workshop "Relativistic niclear physics: from hundreds of MeV to TeV", May 2006, Modra, Slovak Republic

arxiv created 2006/10/17 · arxiv updated 2009/12/01

Abstract

Experimental results on peripheral fragmentation of relativistic ¹¹B nuclei are presented. In the experiment the emulsions exposured to ¹¹B beam with momentum 2.75 A GeV/c at the JINR Nuclotron are used. The relative probability of various fragmentation channels for nucleus breakups (class A) and more violent peripheral interactions (class B) have been determined. For classes under investigations the sum of the fragment charges in narrow forward cone is equal to the projectile charge, but in the events of class A there are no secondary particles and in the events of class B there are. In both classes the main channels is ¹¹B→2He+X: 62% and 50%, corresponding. The main channel ¹¹B→2(Z_fr=2)+(Z_fr=1) was investigated in details. Momentum measurements of single-charged fragments have been done to determine number of p, d and t in the channel. This way it was found that the ratio N_p : N_d : N_t is about 1:1:1 for ¹¹B nuclei dissociation and about 15:5:1 for peripheral interactions of ¹¹B nuclei.

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