arXiv 0901.13362009-01-11nucl-ex

立方氮化硼：一种有前景的超冷中子应用新材料

Cubic boron nitride: a new prospective material for ultracold neutron application

Yu. Sobolev, Th. Lauer, Yu. Borisov, M. Daum, N. du Fresne, L. Goeltl, G. Hampel, W. Heil, A. Knecht, M. Keunecke, J. V. Kratz, T. Lang, M. Meister, Ch. Plonka-… 展开作者

Yu. Sobolev, Th. Lauer, Yu. Borisov, M. Daum, N. du Fresne, L. Goeltl, G. Hampel, W. Heil, A. Knecht, M. Keunecke, J. V. Kratz, T. Lang, M. Meister, Ch. Plonka-Spehr, Yu. Pokotilovski, P. Reichert, U. Schmidt, Th. Krist, N. Wiehl, J. Zenner

发表信息：: Nucl.Instrum.Meth.A614:461-467,2010
DOI：: 10.1016/j.nima.2009.12.035

阅读 PDF

arXiv 页面 ↗HTML 原文 ↗

摘要：

首次在研究堆TRIGA Mainz的超冷中子源上用飞行时间法（TOF）测量了天然立方氮化硼（cBN）的中子光学壁势。所研究的样品具有（305 +/- 15）neV的壁电位。该值与中子反射计数据和理论预期的结果吻合得很好。由于立方氮化硼涂层（同位素富集）具有高的UCN临界速度和良好的介电特性，因此在UCN实验中将有许多应用。

英文摘要：

For the first time, the neutron optical wall-potential of natural cubic boron nitride (cBN) was measured at the ultracold neutron (UCN) source of the research reactor TRIGA Mainz using the time-of-flight method (TOF). The samples investigated had a wall-potential of (305 +/- 15) neV. This value is in good agreement with the result extracted from neutron reflectometry data and theoretical expectations. Because of its high critical velocity for UCN and its good dielectric characteristics, cubic boron nitride coatings (isotopically enriched) will be useful for a number of applications in UCN experiments.

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。