Irradiation of nuclear emulsions in relativistic beams of He-6 and H-3 nuclei

nucl-ex

/ Authors

M. I. Adamovich, A. M. Baldin, V. Bradnova, M. M. Chernyavsky, V. A. Dronov, S. P. Kharlamov, A. D. Kovalenko, V. A. Krasnov, V. G. Larionova, G. I. Orlova

and 5 more authors

N. G. Peresadko, P. A. Rukoyatkin, V. V. Rusakova, N. A. Salmanova, P. I. Zarubin

/ Abstract

Using a Li-6 nucleus beam extracted from the JINR Synchrophasotron at momentum 2.67A GeV/c a secondary beam was produced with a composition of 1% of He-6 and 99% of H-3 nuclei. Preliminary results on the features of nucleus-nucleus interactions of He-6 nuclei and charge exchange (CE) of H-3 nucleus are presented. Interactions of He-6 nucleus external neutrons with emulsion nuclei as well as a coherent stripping of He-6 nucleus external neutrons are observed. A mean range of H-3 nuclei to inelastic interactions in the BR-2 type emulsion is equal to 23.$\pm$3.0 cm. A mean range in emulsion for a nuclear CE process H-3 to He-3 is equal to 40$\pm$16 m. The CE cross-sections with a charged meson production or without it are approximately equal. The CE cross-section with excitation of a target nucleus exceeds the one without excitation. The mean transverse momentum of He-3 nuclei is equal to 0.16$\pm$0.03 GeV/c.