Physics Procedia最新文献_第5页

Study of Signal to Noise Ratio of Coded Source Neutron Imaging with Analysis Method and Numerical Simulation 编码源中子成像信噪比的分析与数值模拟研究

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-06-24 DOI: 10.1016/j.phpro.2017.06.046

Sheng Wang , Hang Li , Chao Cao , Yang Wu , Heyong Huo , Bin Tang , Yubin Zou , Yuanrong Lu , Guoyou Tang , Zhiyu Guo

引用次数: 3

A Neutron Detector with Submicron Spatial Resolution using Fine-grained Nuclear Emulsion 亚微米空间分辨率的细粒核乳剂中子探测器

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-06-24 DOI: 10.1016/j.phpro.2017.06.031

N. Naganawa , S. Awano , M. Hino , M. Hirose , K. Hirota , H. Kawahara , M. Kitaguchi , K. Mishima , T. Nagae , H.M. Shimizu , S. Tasaki , A. Umemoto

引用次数: 6

Polychromatic Two-wave Mixing in a Cubic Photorefractive Crystal 立方光折变晶体中的多色双波混频

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-02-20 DOI: 10.1016/j.phpro.2017.01.009

R.V. Romashko , M.A. Asalkhanova , Yu.N. Kulchin

引用次数: 1

Status and Perspectives of Neutron Imaging Facilities 中子成像设备的现状与展望

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-06-24 DOI: 10.1016/j.phpro.2017.06.019

E. Lehmann , P. Trtik , D. Ridikas

{"title":"Status and Perspectives of Neutron Imaging Facilities","authors":"E. Lehmann , P. Trtik , D. Ridikas","doi":"10.1016/j.phpro.2017.06.019","DOIUrl":"10.1016/j.phpro.2017.06.019","url":null,"abstract":"<div><p>The methodology and the application range of neutron imaging techniques have been significantly improved at numerous facilities worldwide in the last decades. This progress has been achieved by new detector systems, the setup of dedicated, optimized and flexible beam lines and the much better understanding of the complete imaging process thanks to complementary simulations. Furthermore, new applications and research topics were found and implemented.</p><p>However, since the quality and the number of neutron imaging facilities depend much on the access to suitable beam ports, there is still an enormous potential to implement state-of-the-art neutron imaging techniques at many more facilities. On the one hand, there are prominent and powerful sources which do not intend/accept the implementation of neutron imaging techniques due to the priorities set for neutron scattering and irradiation techniques exclusively. On the other hand, there are modern and useful devices which remain under-utilized and have either not the capacity or not the know-how to develop attractive user programs and/or industrial partnerships. In this overview of the international status of neutron imaging facilities, we will specify details about the current situation.</p></div>","PeriodicalId":20407,"journal":{"name":"Physics Procedia","volume":"88 ","pages":"Pages 140-147"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.phpro.2017.06.019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73893280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Neutron Imaging Development at China Academy of Engineering Physics (CAEP) 中国工程物理研究院中子成像研究进展

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-06-24 DOI: 10.1016/j.phpro.2017.06.021

Hang Li , Sheng Wang , Chao Cao , Heyong Huo , Bin Tang

引用次数: 13

Applications of Neutron Radiography for the Nuclear Power Industry 中子射线照相技术在核动力工业中的应用

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-06-24 DOI: 10.1016/j.phpro.2017.06.009

Aaron E. Craft , John P. Barton

{"title":"Applications of Neutron Radiography for the Nuclear Power Industry","authors":"Aaron E. Craft , John P. Barton","doi":"10.1016/j.phpro.2017.06.009","DOIUrl":"10.1016/j.phpro.2017.06.009","url":null,"abstract":"<div><p>The World Conference on Neutron Radiography (WCNR) and International Topical Meeting on Neutron Radiography (ITMNR) series have been running over 35 years. The most recent event, ITMNR-8, focused on industrial applications and was the first time this series was hosted in China. In China, more than twenty new nuclear power plants are under construction and plans have been announced to increase the nuclear capacity by a factor of three within fifteen years. There are additional prospects in many other nations. Neutron tests were vital during previous developments of materials and components for nuclear power applications, as reported in the WCNR and ITMNR conference series. For example a majority of the 140 papers in the Proceedings of the First WCNR are for the benefit of the nuclear power industry. Many of those techniques are being utilized and advanced to the present time. Neutron radiography of irradiated nuclear fuel provides more comprehensive information about the internal condition of irradiated nuclear fuel than any other non-destructive technique to date. Applications include examination of nuclear waste, nuclear fuels, cladding, control elements, and other critical components. In this paper, applications of neutron radiography techniques developed and applied internationally for the nuclear power industry since the earliest years are reviewed, and the question is asked whether neutron test techniques, in general, can be of value in development of the present and future generations of nuclear power plants world-wide.</p></div>","PeriodicalId":20407,"journal":{"name":"Physics Procedia","volume":"88 ","pages":"Pages 73-80"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.phpro.2017.06.009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76166045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 23

Verification of Plutonium Content in PuBe Sources Using MCNP® 6.2.0 Beta with TENDL 2012 Libraries 使用MCNP®6.2.0 Beta与TENDL 2012库验证PuBe源中的钚含量

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-10-26 DOI: 10.1016/j.phpro.2017.09.016

M.L. Lockhart, G.E. McMath

{"title":"Verification of Plutonium Content in PuBe Sources Using MCNP® 6.2.0 Beta with TENDL 2012 Libraries","authors":"M.L. Lockhart, G.E. McMath","doi":"10.1016/j.phpro.2017.09.016","DOIUrl":"10.1016/j.phpro.2017.09.016","url":null,"abstract":"<div><p>Although the production of PuBe neutron sources has discontinued, hundreds of sources with unknown or inaccurately declared plutonium content are in existence around the world. Institutions have undertaken the task of assaying these sources, measuring, and calculating the isotopic composition, plutonium content, and neutron yield. The nominal plutonium content, based off the neutron yield per gram of pure <sup>239</sup>Pu, has shown to be highly inaccurate. New methods of measuring the plutonium content allow a more accurate estimate of the true Pu content, but these measurements need verification. Using the TENDL 2012 nuclear data libraries, MCNP6 has the capability to simulate the (α, n) interactions in a PuBe source. Theoretically, if the source is modeled according to the plutonium content, isotopic composition, and other source characteristics, the calculated neutron yield in MCNP can be compared to the experimental yield, offering an indication of the accuracy of the declared plutonium content. In this study, three sets of PuBe sources from various backgrounds were modeled in MCNP6 1.2 Beta, according to the source specifications dictated by the individuals who assayed the source. Verification of the source parameters with MCNP6 also serves as a means to test the alpha transport capabilities of MCNP6 1.2 Beta with TENDL 2012 alpha transport libraries. Good agreement in the comparison would indicate the accuracy of the source parameters in addition to demonstrating MCNP's capabilities in simulating (α, n) interactions.</p></div>","PeriodicalId":20407,"journal":{"name":"Physics Procedia","volume":"90 ","pages":"Pages 305-312"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.phpro.2017.09.016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83269017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Thermo- and Mechanically Stable Electro-optic Q-switches Based on the RKTP Crystal 基于RKTP晶体的热稳定和机械稳定电光q开关

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-02-20 DOI: 10.1016/j.phpro.2017.01.014

O.T. Vazhinsky , K.S. Vazhinskaya , I.A. Pargachev , L.Y. Serebrennikov , V.A. Krakovsky

引用次数: 1

Accelerated Learning: Undergraduate Research Experiences at the Texas A&M Cyclotron Institute 加速学习:本科生在德州农工大学回旋加速器研究所的研究经历

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-10-26 DOI: 10.1016/j.phpro.2017.09.029

S.J. Yennello

{"title":"Accelerated Learning: Undergraduate Research Experiences at the Texas A&M Cyclotron Institute","authors":"S.J. Yennello","doi":"10.1016/j.phpro.2017.09.029","DOIUrl":"10.1016/j.phpro.2017.09.029","url":null,"abstract":"<div><p>The Texas A&M Cyclotron Institute (TAMU CI) has had an NSF funded Research Experiences for Undergraduates program since 2004. Each summer about a dozen students from across the country join us for the 10-week program. They are each imbedded in one of the research groups of the TAMU CI and given their own research project. While the main focus of their effort is their individual research project, we also have other activities to broaden their experience. For instance, one of those activities has been involvement in a dedicated group experiment. Because not every experimental group will run during those 10 weeks and the fact that some of the students are in theory research groups, a group research experience allows everyone to actually be involved in an experiment using the accelerator. In stark contrast to the REU students’ very focused experience during the summer, Texas A&M undergraduates can be involved in research projects at the Cyclotron throughout the year, often for multiple years. This extended exposure enables Texas A&M students to have a learning experience that cannot be duplicated without a local accelerator. The motivation for the REU program was to share this accelerator experience with students who do not have that opportunity at their home institution.</p></div>","PeriodicalId":20407,"journal":{"name":"Physics Procedia","volume":"90 ","pages":"Pages 354-363"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.phpro.2017.09.029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77385089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Electrostatic Field Influence on Luminescence Features of Cadmium Sulphide Quantum Dots in Silica Matrix 静电场对二氧化硅基体中硫化镉量子点发光特性的影响

Physics Procedia Pub Date : 2017-01-01 Epub Date: 2017-02-20 DOI: 10.1016/j.phpro.2017.01.004

S.S. Voznesenskiy , A.A. Sergeev , I.V. Postnova , Y.A. Shchipunov

引用次数: 2