BeO中高频热中子波的测量

A.I.M. Ritchie, S. Whittlestone
{"title":"BeO中高频热中子波的测量","authors":"A.I.M. Ritchie,&nbsp;S. Whittlestone","doi":"10.1016/0022-3107(73)90006-3","DOIUrl":null,"url":null,"abstract":"<div><p>The amplitudes and phases of neutron waves have been measured in a BeO assembly in the frequency range 515·7 Hz to 1719 Hz. The results confirm earlier measurements that below ∼520 Hz the neutron wave has the properties of a discrete mode of propagation. At frequencies ≧720 Hz the attenuation <em>α</em>(<em>z</em>) and phase shift parameters <em>ξ</em>(<em>z</em>) change with distance from the source, the change being more marked the higher the frequency.</p><p>The observed spatial variations of <em>α</em>(<em>z</em>) and <em>ζ</em>(<em>z</em>) do not agree with present theoretical predictions. Interference effects predicted by theory have not been observed.</p></div>","PeriodicalId":100811,"journal":{"name":"Journal of Nuclear Energy","volume":"27 5","pages":"Pages 335-350"},"PeriodicalIF":0.0000,"publicationDate":"1973-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-3107(73)90006-3","citationCount":"4","resultStr":"{\"title\":\"Measurement of thermal neutron waves at high frequencies in BeO\",\"authors\":\"A.I.M. Ritchie,&nbsp;S. Whittlestone\",\"doi\":\"10.1016/0022-3107(73)90006-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The amplitudes and phases of neutron waves have been measured in a BeO assembly in the frequency range 515·7 Hz to 1719 Hz. The results confirm earlier measurements that below ∼520 Hz the neutron wave has the properties of a discrete mode of propagation. At frequencies ≧720 Hz the attenuation <em>α</em>(<em>z</em>) and phase shift parameters <em>ξ</em>(<em>z</em>) change with distance from the source, the change being more marked the higher the frequency.</p><p>The observed spatial variations of <em>α</em>(<em>z</em>) and <em>ζ</em>(<em>z</em>) do not agree with present theoretical predictions. Interference effects predicted by theory have not been observed.</p></div>\",\"PeriodicalId\":100811,\"journal\":{\"name\":\"Journal of Nuclear Energy\",\"volume\":\"27 5\",\"pages\":\"Pages 335-350\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1973-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0022-3107(73)90006-3\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Nuclear Energy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0022310773900063\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nuclear Energy","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0022310773900063","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4

摘要

用BeO装置测量了515.7 Hz ~ 1719 Hz频率范围内的中子波的幅值和相位。结果证实了先前的测量结果,即低于~ 520 Hz的中子波具有离散传播模式的特性。在≧720 Hz时,衰减α(z)和相移参数ξ(z)随距离源的远近而变化,频率越高变化越明显。观测到的α(z)和ζ(z)的空间变化与目前的理论预测不一致。理论预测的干涉效应尚未观察到。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Measurement of thermal neutron waves at high frequencies in BeO

The amplitudes and phases of neutron waves have been measured in a BeO assembly in the frequency range 515·7 Hz to 1719 Hz. The results confirm earlier measurements that below ∼520 Hz the neutron wave has the properties of a discrete mode of propagation. At frequencies ≧720 Hz the attenuation α(z) and phase shift parameters ξ(z) change with distance from the source, the change being more marked the higher the frequency.

The observed spatial variations of α(z) and ζ(z) do not agree with present theoretical predictions. Interference effects predicted by theory have not been observed.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信