发布求助
文献互助 智能选刊 最新文献

Journal of Nuclear Energy (1954)最新文献

筛选
英文 中文
A calculation of the neutron energy spectrum produced by a pulsed source in a heavy moderator, assuming a constant mean free path 假设平均自由程恒定，在重慢化剂中由脉冲源产生的中子能谱的计算
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90185-X
M.V. Kazarnovskii
{"title":"A calculation of the neutron energy spectrum produced by a pulsed source in a heavy moderator, assuming a constant mean free path","authors":"M.V. Kazarnovskii","doi":"10.1016/0891-3919(59)90185-X","DOIUrl":"10.1016/0891-3919(59)90185-X","url":null,"abstract":"<div><p>The energy distribution of neutrons from a pulsed source in a moderator of mass number <em>M</em> ⪢ 1 is shown, on the assumption of a constant mean free path <em>l</em>, to be <span><span><span><math><mtext>n(z) = </mtext><mtext>const.</mtext><mtext> × </mtext><mtext>exp</mtext><mtext> {</mtext><mtext>1</mtext><mtext>2</mtext><mtext>(M + 1)ƒ</mtext><msub><mi></mi><mn>−1</mn></msub><mtext>(z) + ƒ</mtext><msub><mi></mi><mn>0</mn></msub><mtext>(z) + 2(M + 1)</mtext><msup><mi></mi><mn>−1</mn></msup><mtext>ƒ</mtext><msub><mi></mi><mn>1</mn></msub><mtext>(z) + …}</mtext></math></span></span></span> at energies small in comparison with the source energy. <em>z</em> = 1(<em>M</em> +1)/<em>vt</em>, with <em>v</em> the neutron velocity and <em>t</em> the slowing-down time. <span><math><mtext>ƒ;</mtext><msub><mi></mi><mn>−1</mn></msub><mtext>(z), ƒ</mtext><msub><mi></mi><mn>0</mn></msub><mtext>(z) </mtext><mtext>and</mtext><mtext> ƒ</mtext><msub><mi></mi><mn>1</mn></msub><mtext>(z)</mtext></math></span> are given in integral form, together with analytical expressions valid near the maximum, and asymptotic expansions; detailed tables of the functions are also provided. It is demonstrated by numerical calculation that a knowledge of these three functions is sufficient to allow the neutron spectrum to be determined even in deuterium. The situation in a moderator composed of a number of different types of nuclei is considered. In this case the problem is solved by developing a method for solving integral and integrodifferential equations whose kernel <em>K</em>(<em>x</em>, <em>y</em>) is significantly different from zero only where |<em>x</em> − <em>y</em>|/|<em>x</em> + <em>y</em>| is very small.</p></div>","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 293-303"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90185-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73078276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Multiple-Scattering corrections in ‘spherical’ and ‘ring’ geometry “球形”和“环形”几何中的多重散射校正
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90163-0
V.F. Turchin
{"title":"Multiple-Scattering corrections in ‘spherical’ and ‘ring’ geometry","authors":"V.F. Turchin","doi":"10.1016/0891-3919(59)90163-0","DOIUrl":"10.1016/0891-3919(59)90163-0","url":null,"abstract":"<div><p>A method is given for making a correction for multiple scattering in experiments to measure the angular distribution of elastically scattered neutrons, when the average path length of the neutron in the specimen is comparable with, but not substantially greater than, the scattering mean free path. In the case of isotropic nuclear scattering the probabilities of multiple scattering are evaluated for a sphere and for ring specimens of circular and rectangular cross-section; double scattering by direct reduction of the appropriate integrals and higher order processes by approximate methods. The anisotropic.scattering of neutrons of several MeV is dealt with by representing the cross-section σ(θ) = σ<sub>1</sub>(θ) + σ<sub>2</sub>(θ) as the sum of σ<sub>1</sub>(θ), a forward peak, and σ<sub>2</sub>(θ) a more or less isotropic remainder term. Nuclear scattering events are then divided into two types according as to which partial cross-section is involved, and double-scattering processes correspondingly divided into four classes. The probabilities of all the four last-mentioned classes are calculated from the results of the theory for isotropic scattering. Higher multiplicities of scattering are treated in the same way.</p></div>","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 169-177"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90163-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72615516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A determination of ν for the 14·8 MeV neutron-induced fission of 235U 14·8 MeV中子诱导的235U裂变ν的测定
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90174-5
A.N. Protopopov, M.V. Blinov
{"title":"A determination of ν for the 14·8 MeV neutron-induced fission of 235U","authors":"A.N. Protopopov,&nbsp;M.V. Blinov","doi":"10.1016/0891-3919(59)90174-5","DOIUrl":"10.1016/0891-3919(59)90174-5","url":null,"abstract":"","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 207-209"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90174-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76531007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Photo-electric absorption of scattered gamma-rays 散射伽马射线的光电吸收
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90165-7
M.M. Sokolov, A.P. Ochkur, A.A. Fedorov, N.I. Karabanov
{"title":"Photo-electric absorption of scattered gamma-rays","authors":"M.M. Sokolov,&nbsp;A.P. Ochkur,&nbsp;A.A. Fedorov,&nbsp;N.I. Karabanov","doi":"10.1016/0891-3919(59)90165-7","DOIUrl":"10.1016/0891-3919(59)90165-7","url":null,"abstract":"","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 182-183"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90165-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"108200586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An estimate of electronic temperature and degree of ionization in the initial stages of a pulsed high current gas discharge 脉冲大电流气体放电初始阶段的电子温度和电离程度的估计
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90152-6
N.A. Borzunov, V.I. Kogan, D.V. Orlinsky
{"title":"An estimate of electronic temperature and degree of ionization in the initial stages of a pulsed high current gas discharge","authors":"N.A. Borzunov,&nbsp;V.I. Kogan,&nbsp;D.V. Orlinsky","doi":"10.1016/0891-3919(59)90152-6","DOIUrl":"10.1016/0891-3919(59)90152-6","url":null,"abstract":"","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 143-148"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90152-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88393483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
The temperature of regenerative pre-heating of water in an atomic power station with a water-cooled reactor 带水冷堆的原子能发电站的蓄热式预热水温
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90167-3
I.A. True
{"title":"The temperature of regenerative pre-heating of water in an atomic power station with a water-cooled reactor","authors":"I.A. True","doi":"10.1016/0891-3919(59)90167-3","DOIUrl":"10.1016/0891-3919(59)90167-3","url":null,"abstract":"","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 185-189"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90167-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91160663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Some neutron resonance-absorption integrals 一些中子共振吸收积分
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90134-X
V.B. Klimentov, V.M. Griazev
{"title":"Some neutron resonance-absorption integrals","authors":"V.B. Klimentov,&nbsp;V.M. Griazev","doi":"10.1016/0891-3919(59)90134-X","DOIUrl":"10.1016/0891-3919(59)90134-X","url":null,"abstract":"<div><p>Observed resonance absorption integrals are reported for 42 elements, ten of which have not been examined hitherto. The method involves an accurate measurement of the reactivity of a reactor when the specimen is inserted into the core, and gives the resonance absorption integral for the epicadmium spectrum of the reactor.</p></div>","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 20-27"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90134-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83013528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
The radiation field of a rectangular parallelepipedal self-absorbing source 直角平行六面体自吸收源的辐射场
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90181-7
L.N. Pork
{"title":"The radiation field of a rectangular parallelepipedal self-absorbing source","authors":"L.N. Pork","doi":"10.1016/0891-3919(59)90181-7","DOIUrl":"10.1016/0891-3919(59)90181-7","url":null,"abstract":"","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 250-251"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90181-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79512305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Abstracts and titles of future papers 未来论文的摘要和标题
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90186-8
{"title":"Abstracts and titles of future papers","authors":"","doi":"10.1016/0891-3919(59)90186-8","DOIUrl":"https://doi.org/10.1016/0891-3919(59)90186-8","url":null,"abstract":"","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 304-310"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90186-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136553258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extra fine-grained nuclear research emulsions 超细粒核研究乳剂
Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 Epub Date: 2015-07-13 DOI: 10.1016/0891-3919(59)90142-X
N.A. Perfilov, N.R. Novikova, E.I. Prokof'eva
{"title":"Extra fine-grained nuclear research emulsions","authors":"N.A. Perfilov,&nbsp;N.R. Novikova,&nbsp;E.I. Prokof'eva","doi":"10.1016/0891-3919(59)90142-X","DOIUrl":"10.1016/0891-3919(59)90142-X","url":null,"abstract":"<div><p>The preparation of a very uniform fine-grained photographic emulsion is described. Good reproducibility of the emulsions is obtained by applying a potentiometer method of control during the emulsification process. The emulsion sensitivity can be varied so that charged particles from heavy fragments to relativistic particles can be recorded with a grain density of 60 grains per 100 μ of track.</p></div>","PeriodicalId":100812,"journal":{"name":"Journal of Nuclear Energy (1954)","volume":"9 1","pages":"Pages 90-96"},"PeriodicalIF":0.0,"publicationDate":"1959-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0891-3919(59)90142-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73914065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
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
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
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：604180095
Book学术官方微信
小红书