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Investigation of neutron emission from relativistic heavy ion interactions by nuclear tracks |
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| Authors: | Shi-Lun Guo Yu-Lan Wang R Brandt P Vater B A Kulakov M I Krivopustov V S Butsev V Bradnova Benhao Sa and Yuming Zheng |
| Institution: | * China Institute of Atomic Energy, P.O. Box 275(96), Beijing 102413, China ? Kernchemie, FB 14, Universität Marburg, D-35032, Marburg, Germany ? Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna, Russia |
| Abstract: | Fast neutrons produced in 44 and 22 GeV 12C+Cu interactions have been recorded and analysed with a CR-39 detector stack. The irradiation of the CR-39 stack to fast neutrons was carried out at the accelerator Synchrophasotron, Joint Institute for Nuclear Research, Dubna, Russia. Areal and volume densities of tracks induced by fast neutrons in the CR-39 at different positions and for different etching time have been measured. The neutron production ratio of 44 GeV to 22 GeV 12C+Cu interactions has been obtained, which is 2.17 ± 0.30 by areal track density, or 2. 12±0.33 by step etch technique, or 2.03±0.34 by volume track density measurement. These results confirm that the production rate at 44 GeV 12C+Cu interactions is more than theoretical estimation. |
| Keywords: | Relativistic heavy ion interactions fast neutron emission CR-39 stack energy dependence of neutron production |
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