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arXiv 1310.4487physics.ins-detnucl-ex
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用于中子源(n,g)截面测量的4 p BaF2探测器

A 4p BaF2 detector for (n,g) cross section measurements at a spallation neutron source

M. Heil, R. Reifarth, M. M. Fowler, R. C. Haight, F. Käppeler, R. S. Rundberg, E. H. Seabury, J. L. Ullmann, J. B. Wilhelmy, K. Wisshak

摘要:

为改进先进反应堆概念的中子俘获截面、放射性废物的嬗变以及中子俘获核合成的天体物理学方案而进行的探索,激发了基于现代技术的新的实验努力。最近在keV区域的测量表明,4p BaF2探测器是一种精确和通用的仪器,用于此类研究。目前的工作涉及这样一个4p BaF2探测器的潜力结合spiritual中子源,提供大的中子通量在很宽的能量范围内。详细的蒙特卡罗模拟与GEANT包已经进行了调查的关键背景在spattered设施,优化探测器的设计,并讨论替代的解决方案。

英文摘要:

The quest for improved neutron capture cross sections for advanced reactor concepts, transmutation of radioactive wastes as well as for astrophysical scenarios of neutron capture nucleosynthesis has motivated new experimental efforts based on modern techniques. Recent measurements in the keV region have shown that a 4p BaF2 detector represents an accurate and versatile instrument for such studies. The present work deals with the potential of such a 4p BaF2 detector in combination with spallation neutron sources, which offer large neutron fluxes over a wide energy range. Detailed Monte Carlo simulations with the GEANT package have been performed to investigate the critical backgrounds at a spallation facility, to optimize the detector design, and to discuss alternative solutions.

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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