Pub Date : 1961-01-01DOI: 10.1016/0368-3265(61)90006-8
C. Carter
Galanin's proof of the homogenization method for an infinite reactor lattice is extended to the case of the finite bare reactor lattice. It is shown that homogenization is rigorously valid only for a rectangular reactor in which the reactor boundary has a certain specified relationship to the lattice, but that homogenization is a good approximation in any reactor containing a large number of lattice cells. The applicability of Wigner's second fundamental theorem to a heterogeneous reactor is discussed.
{"title":"The homogenization of heterogeneous reactors","authors":"C. Carter","doi":"10.1016/0368-3265(61)90006-8","DOIUrl":"10.1016/0368-3265(61)90006-8","url":null,"abstract":"<div><p><span>Galanin's</span> proof of the homogenization method for an infinite reactor lattice is extended to the case of the finite bare reactor lattice. It is shown that homogenization is rigorously valid only for a rectangular reactor in which the reactor boundary has a certain specified relationship to the lattice, but that homogenization is a good approximation in any reactor containing a large number of lattice cells. The applicability of Wigner's second fundamental theorem to a heterogeneous reactor is discussed.</p></div>","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0368-3265(61)90006-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86157314","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}
Pub Date : 1961-01-01DOI: 10.1016/0368-3265(61)90008-1
G. Rowlands
Two distinct ways in which the variational method may be used to obtain approximate solutions of the equations which are involved in neutron transport theory are discussed. In the first, a method is given whereby an estimate of an eigenvalue or some weighted average of the solution of the equation is obtained. Whilst the second way is a method whereby a relatively complicated equation involving multi-dimensional variables is reduced to a number of simpler equations each in a fewer number of independent variables. Examples to illustrate both methods are given.
{"title":"The application of the variational method to neutron transport theory","authors":"G. Rowlands","doi":"10.1016/0368-3265(61)90008-1","DOIUrl":"10.1016/0368-3265(61)90008-1","url":null,"abstract":"<div><p>Two distinct ways in which the variational method may be used to obtain approximate solutions of the equations which are involved in neutron transport theory are discussed. In the first, a method is given whereby an estimate of an eigenvalue or some weighted average of the solution of the equation is obtained. Whilst the second way is a method whereby a relatively complicated equation involving multi-dimensional variables is reduced to a number of simpler equations each in a fewer number of independent variables. Examples to illustrate both methods are given.</p></div>","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0368-3265(61)90008-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90895872","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}
Pub Date : 1961-01-01DOI: 10.1088/0368-3281/3/3/108
A. I. Nastyukha, A. Striganov, I. I. Afanas’ev, L. N. Mikhailov, M. N. Oganov
{"title":"LETTERS TO THE EDITORS: Mass-spectrographic and spectroscopic studies of hydrogen discharge from an ion source","authors":"A. I. Nastyukha, A. Striganov, I. I. Afanas’ev, L. N. Mikhailov, M. N. Oganov","doi":"10.1088/0368-3281/3/3/108","DOIUrl":"https://doi.org/10.1088/0368-3281/3/3/108","url":null,"abstract":"","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91108328","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}
Pub Date : 1961-01-01DOI: 10.1016/0368-3265(61)90012-3
E.S. Borovik, B.G. Lazarev, I.F. Mikhailov
A description is given of a hydrogen condensation pump of output 3·7 × 104 sec−1 which has its own liquifier. The limiting vacuum is 10−8–10−9 mm Hg. The total power consumed (allowing for the liquid nitrogen) is 17 which is less than for oil-diffusion pumps of the same performance.
{"title":"A hydrogen condensation pump with a built-in liquefier","authors":"E.S. Borovik, B.G. Lazarev, I.F. Mikhailov","doi":"10.1016/0368-3265(61)90012-3","DOIUrl":"10.1016/0368-3265(61)90012-3","url":null,"abstract":"<div><p>A description is given of a hydrogen condensation pump of output 3·7 × 10<sup>4</sup> sec<sup>−1</sup> which has its own liquifier. The limiting vacuum is 10<sup>−8</sup>–10<sup>−9</sup> mm Hg. The total power consumed (allowing for the liquid nitrogen) is 17 which is less than for oil-diffusion pumps of the same performance.</p></div>","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0368-3265(61)90012-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"93189375","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}
Pub Date : 1961-01-01DOI: 10.1016/0368-3265(61)90014-7
Iu.K. Gus'kov, A.V. Zvonarev
{"title":"A measurement of the electrical resistance of boiling nitrogen undergoing irradiation in a reactor","authors":"Iu.K. Gus'kov, A.V. Zvonarev","doi":"10.1016/0368-3265(61)90014-7","DOIUrl":"10.1016/0368-3265(61)90014-7","url":null,"abstract":"","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0368-3265(61)90014-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89729031","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}
Pub Date : 1961-01-01DOI: 10.1016/0368-3265(61)90011-1
N.A. Dollezhal', A.K. Krasin
{"title":"Five years of nuclear power","authors":"N.A. Dollezhal', A.K. Krasin","doi":"10.1016/0368-3265(61)90011-1","DOIUrl":"https://doi.org/10.1016/0368-3265(61)90011-1","url":null,"abstract":"","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0368-3265(61)90011-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137166953","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}
Pub Date : 1961-01-01DOI: 10.1088/0368-3281/3/1/111
G. Askar’yan
{"title":"LETTERS TO THE EDITORS: Self-acceleration of a flux of charged particles by induction","authors":"G. Askar’yan","doi":"10.1088/0368-3281/3/1/111","DOIUrl":"https://doi.org/10.1088/0368-3281/3/1/111","url":null,"abstract":"","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86223196","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}
Pub Date : 1961-01-01DOI: 10.1016/0368-3265(61)90003-2
A. Rahman
The scattering of neutrons from a rotating rigid molecule has been analysed for incident neutron energy of the same order of magnitude as the rotational level separations, without making any approximations.
When the energy of the incident neutron is large, the method of Zemach and Qlauber (1956) of using the rotator as a model for a spherical top molecule, has been justified.
The inclusion of zero-point vibrations have been considered briefly.
{"title":"Scattering of slow neutrons by molecules","authors":"A. Rahman","doi":"10.1016/0368-3265(61)90003-2","DOIUrl":"10.1016/0368-3265(61)90003-2","url":null,"abstract":"<div><p>The scattering of neutrons from a rotating rigid molecule has been analysed for incident neutron energy of the same order of magnitude as the rotational level separations, without making any approximations.</p><p>When the energy of the incident neutron is large, the method of <span>Zemach</span> and <span>Qlauber</span> (1956) of using the rotator as a model for a spherical top molecule, has been justified.</p><p>The inclusion of zero-point vibrations have been considered briefly.</p></div>","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0368-3265(61)90003-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73142843","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}
Pub Date : 1961-01-01DOI: 10.1016/0368-3265(61)90013-5
V.K. Gorshkov, M.P. Anikina
The yields of 188Ba, 138Sr, 90Sr, 89Y and of five zirconium isotopes formed in the fission of 233U have been measured. There is a fine-structure in the yield as a function of mass number. The independent yield of 136Cs has been measured, while that of 86Rb has been estimated, thus completing important parts of the yield curve. The boundary between the region where a light fragment emits one neutron and the region where it emits two is established from the curve. It is concluded that the structure is determined by events at the instant of fission.
{"title":"The fine-structure in the fission yield curve for 233U","authors":"V.K. Gorshkov, M.P. Anikina","doi":"10.1016/0368-3265(61)90013-5","DOIUrl":"10.1016/0368-3265(61)90013-5","url":null,"abstract":"<div><p>The yields of <sup>188</sup>Ba, <sup>138</sup>Sr, <sup>90</sup>Sr, <sup>89</sup>Y and of five zirconium isotopes formed in the fission of <sup>233</sup>U have been measured. There is a fine-structure in the yield as a function of mass number. The independent yield of <sup>136</sup>Cs has been measured, while that of <sup>86</sup>Rb has been estimated, thus completing important parts of the yield curve. The boundary between the region where a light fragment emits one neutron and the region where it emits two is established from the curve. It is concluded that the structure is determined by events at the instant of fission.</p></div>","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0368-3265(61)90013-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80588537","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}
Pub Date : 1960-10-01DOI: 10.1016/S0368-3265(60)80029-1
A.G. Khabakhpashev
{"title":"The spectrum of neutrons from a Po-α-O source","authors":"A.G. Khabakhpashev","doi":"10.1016/S0368-3265(60)80029-1","DOIUrl":"10.1016/S0368-3265(60)80029-1","url":null,"abstract":"","PeriodicalId":100813,"journal":{"name":"Journal of Nuclear Energy. Part A. Reactor Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1960-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0368-3265(60)80029-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76850320","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}
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