Further Studies of BURSTS and Spallation in High-Energy Heavy Ion Reactions

• 作者: Alina Tania Neagu Eberhard Ganssauge Elena Firu Maria Haiduc Reinhard Brandt Reza Hashemi-Nezhad Valery Ditlov Wolfram Westmeier
• 来源期刊: 核科学与技术国际期刊(英文)
• 学科: 医学
• 关键词: HIGH-ENERGY HI Reaction BURST SPALLATION MCNPX
• 年，卷（期）: 2017,（1）
• 页码范围: 35-57
• 页数: 23页
• 分类号: R73

摘要

Aspects of BURSTS and Spallation reactions induced by high-energy heavy ions in thick targets (>10 cm thick) will be investigated: BURSTS are reviewed from a historical and phenomenological point-of-view. Details of interactions in nuclear emulsions will be compared for irradiations of 72 GeV 22Ne-ions from Dubna with irradiations of 72 GeV 40Ar-ions from Berkeley. Measured correlations in individual interactions between multiplicities of “minimum ionizing particles”, ns, and “black prongs”, nb, will be shown as “ns-vs.-nb” per event for BURSTS and separately for Spallation in interactions of 72 GeV 22Ne-ions. Monte Carlo calculations, based on the MCNPX 2.7 code, have been carried out for 72 GeV 22Ne interacting in nuclear emulsions: The correlation between ns and nb in Spallation reactions could be understood. However, “ns-vs.-nb” correlations from BURST-interactions could not be reproduced with this model for events with small numbers of heavy prongs nh ≤ 10. For large numbers of heavy prongs with nh > 10 one could find some agreement between experiments and calculations, however, not in all details. Further experimental and theoretical studies are necessary before one has a complete understanding of BURST interactions in high-energy heavy ion reactions.