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Nuclear Data Sheets. Section A最新文献

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Reduction of U6 representations into SU3 irreducible components 将U6表示形式简化为SU3不可约成分
Nuclear Data Sheets. Section A Pub Date : 1968-05-01 DOI: 10.1016/S0550-306X(68)80012-6
R. Pérez, J. Flores
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引用次数: 8
Internal conversion coefficients at gamma-ray threshold energies 伽马射线阈值能量下的内部转换系数
Nuclear Data Sheets. Section A Pub Date : 1968-05-01 DOI: 10.1016/S0550-306X(68)80016-3
R.F. O’Connell, C.O. Carroll
{"title":"Internal conversion coefficients at gamma-ray threshold energies","authors":"R.F. O’Connell, C.O. Carroll","doi":"10.1016/S0550-306X(68)80016-3","DOIUrl":"https://doi.org/10.1016/S0550-306X(68)80016-3","url":null,"abstract":"","PeriodicalId":100967,"journal":{"name":"Nuclear Data Sheets. Section A","volume":"4 3","pages":"Page 320"},"PeriodicalIF":0.0,"publicationDate":"1968-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0550-306X(68)80016-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136941113","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: 0
Reduction of U6 representations into SU3 irreducible components 将U6表示形式简化为SU3不可约成分
Nuclear Data Sheets. Section A Pub Date : 1968-05-01 DOI: 10.1016/S0550-306X(68)80012-6
R. Pérez, J. Flores
{"title":"Reduction of U6 representations into SU3 irreducible components","authors":"R. Pérez,&nbsp;J. Flores","doi":"10.1016/S0550-306X(68)80012-6","DOIUrl":"https://doi.org/10.1016/S0550-306X(68)80012-6","url":null,"abstract":"<div><p>A table of the <em>SU</em><sub>3</sub> representations contained in a given Young diagram specifying the irreducible representations of the orbital group <em>U</em><sub>6</sub> is constructed for all possible partitions in the 2<em>s</em>-1<em>d</em> shell.</p></div>","PeriodicalId":100967,"journal":{"name":"Nuclear Data Sheets. Section A","volume":"4 3","pages":"Pages 265-270"},"PeriodicalIF":0.0,"publicationDate":"1968-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0550-306X(68)80012-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91761275","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: 8
Effective mass B2 and stiffness parameter C2 for quadrupole vibration in even-even spherical nuclei 均匀球核四极振动的有效质量B2和刚度参数C2
Nuclear Data Sheets. Section A Pub Date : 1968-05-01 DOI: 10.1016/S0550-306X(68)80013-8
C.Y. Wong
{"title":"Effective mass B2 and stiffness parameter C2 for quadrupole vibration in even-even spherical nuclei","authors":"C.Y. Wong","doi":"10.1016/S0550-306X(68)80013-8","DOIUrl":"https://doi.org/10.1016/S0550-306X(68)80013-8","url":null,"abstract":"<div><p>Values of the effective mass <em>B</em><sub>2</sub> and the stiffness parameter <em>C</em><sub>2</sub> for quadrupole vibration of even—even spherical nuclei have been computed from the <em>B</em> (<em>E</em> 2) values and energies of first 2<sup>+</sup> states adopted by Stelson and Gredzins. A comparison of these with values predicted by a liquiddrop model shows <em>B</em><sub>2</sub> an order of magnitude larger than the predictions. The value of <em>C</em><sub>2</sub> is usually less than the prediction but at magic numbers is many times greater.</p></div>","PeriodicalId":100967,"journal":{"name":"Nuclear Data Sheets. Section A","volume":"4 3","pages":"Pages 271-280"},"PeriodicalIF":0.0,"publicationDate":"1968-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0550-306X(68)80013-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91761276","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: 13
Gamma-ray calibration energies 伽马射线校准能量
Nuclear Data Sheets. Section A Pub Date : 1968-05-01 DOI: 10.1016/S0550-306X(68)80015-1
Jerry B. Marion
{"title":"Gamma-ray calibration energies","authors":"Jerry B. Marion","doi":"10.1016/S0550-306X(68)80015-1","DOIUrl":"10.1016/S0550-306X(68)80015-1","url":null,"abstract":"<div><p>A tabulation is given of <em>γ</em>-ray energies which are suitable for calibrating high-resolution <em>γ</em>-ray spectrometers. Data from studies of both radioactive sources and nuclear reactions are included, allowing precision calibration in the range 25 keV &lt; E<sub><em>γ</em></sub> &lt; 11 MeV.</p></div>","PeriodicalId":100967,"journal":{"name":"Nuclear Data Sheets. Section A","volume":"4 3","pages":"Pages 301-319"},"PeriodicalIF":0.0,"publicationDate":"1968-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0550-306X(68)80015-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82179001","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: 130
Effective mass B2 and stiffness parameter C2 for quadrupole vibration in even-even spherical nuclei* 偶偶球核四极振动的有效质量B2和刚度参数C2 *
Nuclear Data Sheets. Section A Pub Date : 1968-05-01 DOI: 10.1016/S0550-306X(68)80013-8
C. Wong
{"title":"Effective mass B2 and stiffness parameter C2 for quadrupole vibration in even-even spherical nuclei*","authors":"C. Wong","doi":"10.1016/S0550-306X(68)80013-8","DOIUrl":"https://doi.org/10.1016/S0550-306X(68)80013-8","url":null,"abstract":"","PeriodicalId":100967,"journal":{"name":"Nuclear Data Sheets. Section A","volume":"17 1","pages":"271-280"},"PeriodicalIF":0.0,"publicationDate":"1968-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90065596","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: 13
Comparative study of two-parameter models for predicting rotational energies in even-even nuclei 预测偶偶核旋转能的双参数模型的比较研究
Nuclear Data Sheets. Section A Pub Date : 1968-05-01 DOI: 10.1016/S0550-306X(68)80014-X
P.C. Sood
{"title":"Comparative study of two-parameter models for predicting rotational energies in even-even nuclei","authors":"P.C. Sood","doi":"10.1016/S0550-306X(68)80014-X","DOIUrl":"10.1016/S0550-306X(68)80014-X","url":null,"abstract":"<div><p>An objective comparison of the various two-parameter models proposed for the description of rotational states in even-even nuclei is carried out to assess the reliability of their extrapolation for prediction of as yet unobserved levels. The comparison involving energy ratios <em>E(I)/E</em>(2) contains no arbitrarily adjustable parameters. The semi-empirical formula <span><math><mrow><mi>E</mi><mo>(</mo><mi>I</mi><mo>)</mo><mo>=</mo><mi>A</mi><mrow><mo>{</mo><mrow><mn>1</mn><mo>−</mo><mfrac><mrow><mo>(</mo><mrow><mi>B</mi><mo>/</mo><mi>A</mi></mrow><mo>)</mo><mi>I</mi><mo>(</mo><mi>I</mi><mo>+</mo><mn>1</mn><mo>)</mo></mrow><mrow><mn>1</mn><mo>+</mo><mi>N</mi><mo>(</mo><mrow><mi>B</mi><mo>/</mo><mi>A</mi></mrow><mo>)</mo><mi>I</mi><mo>(</mo><mi>I</mi><mo>+</mo><mn>1</mn><mo>)</mo></mrow></mfrac></mrow><mo>}</mo></mrow><mi>I</mi><mo>(</mo><mi>I</mi><mo>+</mo><mn>1</mn><mo>)</mo></mrow></math></span> is seen to give the best fit. A least-squares fit to observed levels with this formula gives a rms deviation of better than 0.5% in nearly all cases. The calculated values of the rotational constants <em>A</em> and <em>B</em>, and the predicted energies of rotational levels with spin up to <em>I</em> = 16 are tabulated.</p></div>","PeriodicalId":100967,"journal":{"name":"Nuclear Data Sheets. Section A","volume":"4 3","pages":"Pages 281-300"},"PeriodicalIF":0.0,"publicationDate":"1968-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0550-306X(68)80014-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84257193","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: 16
Shell-independent systematics Sn (isotonic) and Sp (isotopic) 非壳类系统Sn(等渗)和Sp(同位素)
Nuclear Data Sheets. Section A Pub Date : 1968-05-01 DOI: 10.1016/S0550-306X(68)80011-4
N.B. Gove, M. Yamada
{"title":"Shell-independent systematics Sn (isotonic) and Sp (isotopic)","authors":"N.B. Gove,&nbsp;M. Yamada","doi":"10.1016/S0550-306X(68)80011-4","DOIUrl":"https://doi.org/10.1016/S0550-306X(68)80011-4","url":null,"abstract":"<div><p>Graphs are presented of recent values for the separation energy of a given neutron versus mass number, <em>S<sub>n</sub></em> (isotonic), and for a given proton versus neutron number, <em>S<sub>p</sub></em> (isotopic). The graphs confirm the fact, pointed out by Yamada and Matumoto in 1961, that the separation energy of the <em>n</em> th proton increases monotonically (except for oddeven effects) as the neutron number is increased, showing little, if any, discontinuity at magic neutron numbers. An analogous statement can be made for the separation energy of the <em>n</em> th neutron as the proton number is increased. Extrapolation by means of the graphs should, therefore, be particularly reliable since it is essentially magic-number independent. Data available in the summer of 1967 have been considered.</p></div>","PeriodicalId":100967,"journal":{"name":"Nuclear Data Sheets. Section A","volume":"4 3","pages":"Pages 237-263"},"PeriodicalIF":0.0,"publicationDate":"1968-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0550-306X(68)80011-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91761277","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
K-, L-, M-shell internal conversion coefficients Z = 30 to Z = 103 K-、L-、m -壳内部转换系数Z = 30 ~ Z = 103
Nuclear Data Sheets. Section A Pub Date : 1968-02-01 DOI: 10.1016/S0550-306X(68)80003-5
{"title":"K-, L-, M-shell internal conversion coefficients Z = 30 to Z = 103","authors":"","doi":"10.1016/S0550-306X(68)80003-5","DOIUrl":"https://doi.org/10.1016/S0550-306X(68)80003-5","url":null,"abstract":"","PeriodicalId":100967,"journal":{"name":"Nuclear Data Sheets. Section A","volume":"4 1","pages":"Pages 13-235"},"PeriodicalIF":0.0,"publicationDate":"1968-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0550-306X(68)80003-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92260732","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
Internal conversion tables part I: K-, L-, M-shell conversion coefficients for Z=30 to Z=103 内部转换表第一部分:Z=30至Z=103的K-、L-、m -壳层转换系数
Nuclear Data Sheets. Section A Pub Date : 1968-02-01 DOI: 10.1016/S0550-306X(68)80002-3
R.S. Hager, E.C. Seltzer
{"title":"Internal conversion tables part I: K-, L-, M-shell conversion coefficients for Z=30 to Z=103","authors":"R.S. Hager,&nbsp;E.C. Seltzer","doi":"10.1016/S0550-306X(68)80002-3","DOIUrl":"https://doi.org/10.1016/S0550-306X(68)80002-3","url":null,"abstract":"<div><p>Values of the internal conversion coefficient, number of electrons per photon emitted in a nuclear transition, are presented from a new relativistic self-consistent-field calculation which takes into account finite nuclear size, hole and exchange effects, experimental electron binding energies, and vacuum polarization. Coefficients are given for each value of <em>Z</em>; for <em>K, L</em>, and <em>M</em> electron shells and <em>L</em>- and <em>M</em>-sub-shells; for nuclear-transition multipolarities E1…E4, M1…M4; and for various nuclear-transition energies up to 1500 keV. A program for finding values for other energies by spline interpolation is appended.</p></div>","PeriodicalId":100967,"journal":{"name":"Nuclear Data Sheets. Section A","volume":"4 1","pages":"Pages 1-11"},"PeriodicalIF":0.0,"publicationDate":"1968-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0550-306X(68)80002-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92233482","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: 974
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