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arXiv 0704.0384nucl-ex
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相对论碎裂过程中$^9$ Be,$^{14}$ N,$^7$ Be和$^8$ B核的成簇特征

Clustering features of $^9$Be, $^{14}$N, $^7$Be, and $^8$B nuclei in relativistic fragmentation

D. A. Artemenkov, T. V. Shchedrina, R. Stanoeva, P. I. Zarubin

摘要:

本文综述了近年来在核处理乳胶中对初能大于1AGeV的轻核团簇的研究。本文介绍了相对论性$^9$ Be核在乳胶中碎裂的研究结果,其中包括He碎片的产生。结果表明,最精确的角度测量,由该技术提供的$α$粒子系统的激发光谱的恢复起着至关重要的作用。在外围相互作用中,$^9$ Be核几乎完全通过$^8$ Be核的0 $^+$和2 $^+$态解离。作为更复杂系统的一个例子,给出了动量为2.86 A GeV/c的$^{14}$ N核在乳胶中离解的研究结果.详细考虑了实验室系统中$^{14}$ N $\to3α+X$通道和其余3个$α$粒子系统中$α$粒子的动量和关联特性。本文研究了放射性$^8$ B、$^7$ Be核在乳胶中周边相对论解离产生的带电碎片的拓扑结构。

英文摘要:

Recent studies of clustering in light nuclei with an initial energy above 1 A GeV in nuclear treack emulsion are overviewed. The results of investigations of the relativistic $^9$Be nuclei fragmentation in emulsion, which entails the production of He fragments, are presented. It is shown that most precise angular measurements provided by this technique play a crucial role in the restoration of the excitation spectrum of the $α$ particle sysytem. In peripheral interactions $^9$Be nuclei are dissociated practically totally through the 0$^+$ and 2$^+$ states of the $^8$Be nucleus. The results of investigations of the dissociation of a $^{14}$N nucleus of momentum 2.86 A GeV/c in emulsion are presented as example of more complicated system. The momentum and correlation characteristics of $α$ particles for the $^{14}$N$\to3α+X$ channel in the laboratory system and the rest systems of 3$α$ particles were considered in detail. Topology of charged fragments produced in peripheral relativistic dissociation of radioactive $^8$B, $^7$Be nuclei in emulsion is studied.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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