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Author : R. L. Henkel
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.3/5 (91 download)
Download or read book Summary of Neutron-induced Fission Cross Sections written by R. L. Henkel and published by . This book was released on 1957 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. D. James
Publisher : Elsevier
ISBN 13 : 1483189767
Total Pages : 294 pages
Book Rating : 4.4/5 (831 download)
Download or read book Nuclear Fission and Neutron-Induced Fission Cross-Sections written by G. D. James and published by Elsevier. This book was released on 2013-10-22 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear Fission and Neutron-Induced Fission Cross-Sections is the first volume in a series on Neutron Physics and Nuclear Data in Science and Technology. This volume serves the purpose of providing a thorough description of the many facets of neutron physics in different fields of nuclear applications. This book also attempts to bridge the communication gap between experts involved in the experimental and theoretical studies of nuclear properties and those involved in the technological applications of nuclear data. This publication will be invaluable to those interested in studying nuclear fission and neutron-induced fission cross-sections, as well as other relevant concepts.
Author :
Publisher :
ISBN 13 :
Total Pages : 3 pages
Book Rating : 4.:/5 (685 download)
Download or read book Measurement and Analysis of the Neutron-induced Fission Cross Sections of 247Cm, 25°Cr and 254Es written by and published by . This book was released on 1994 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of fission cross section measurements were performed on 247Cm, 25°Cf and 254Es. This paper summarizes the most recent results and details the resonance parameter analysis done on 247Cm.
Download or read book Measurement and Analysis of the Neutron-induced Fission Cross Sections of Sup 247Cm, Sup 250Cr and Sup 254Es written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.3/5 (91 download)
Download or read book Reports to the AEC Nuclear Cross Sections Advisory Group written by and published by . This book was released on 1959-06 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Akm Moinul Haque Meaze
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659422164
Total Pages : 152 pages
Book Rating : 4.4/5 (221 download)
Download or read book Neutron Cross-sections: Measurements & Evaluations written by Akm Moinul Haque Meaze and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrons are currently used across a vast extent of science. Neutron induced reaction cross-section is indispensable quantity of nuclear data, which is imperative in the applications of nuclear science and technologies. Precise resonance cross-sections are desired for the safety investigation, assessment of the neutron flux density, reaction rate, etc to drive the nuclear technologies such as nuclear power plant. Fission reaction cross-section is the key parameter for the feasibility studies and for designing next generation reactor. This book presents concrete concepts of neutron, neutron production, neutron induced reaction cross-sections, resonances and interrelated matters. Careful and detailed theoretical and contemporary experimental approaches of this text provide clear, correct, and up-to-date information in the field of neutron physics. With comprehensible discussion and numerous experimental results, this book adequately and widely covers all the major categories of neutron cross-sections.
Download or read book Fluctuations in Neutron-Induced Fission Cross Sections written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Victoria McLane
Publisher : Elsevier
ISBN 13 : 0323142222
Total Pages : 850 pages
Book Rating : 4.3/5 (231 download)
Download or read book Neutron Cross Sections written by Victoria McLane and published by Elsevier. This book was released on 2012-12-02 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutron Cross Sections, Volume 2: Neutron Cross Section Curves presents data for total reaction cross sections and related fission parameters as a function of incident-neutron energy. This book covers energy range from 0.01 eV to 200 MeV to exclude crystalline and magnetic effects for slow neutrons and relativistic effects for high energy neutrons. The data in this volume are grouped into sections corresponding to the element of the target nucleus in the neutron-induced reaction. These sections are ordered in increasing atomic number. Within a section, graphical data are presented for the natural element followed by the isotopes of that element in order of increasing atomic mass. A list of the reaction types is provided at the end of each section. This book also provides graphical section, wherein each graphical page is annotated on the outer edge with a symbol for an element or isotope followed by the list of the cross section data for that element or isotope. The data plotted in the graphical section are tagged by a mnemonic consisting of year, laboratory, and author's last name. This tag can be used to find the corresponding reference on the bibliographic pages.
Download or read book Neutron-induced Fission Cross Sections of 233U, 234U, 236U, and 238U with Respect to 235U. written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurements of the Neutron-induced Fission Cross Sections of 24°Pu and 242Pu Relative to 235U. [0. 02 to 30 MeV, Tables]. PDF Online Free](https://books.google.com/books/content/images/frontcover/V4GiwgEACAAJ?fife=w200-h370)
Download or read book Measurements of the Neutron-induced Fission Cross Sections of 24°Pu and 242Pu Relative to 235U. [0. 02 to 30 MeV, Tables]. written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A continuation is given of the fission-cross-section ratio measurements in progress at the Lawrence Livermore Laboratory. Preliminary results are provided for the 24°Pu/235U and 242Pu/235U ratios from 0.02 to 30 MeV and 0.1 to 30 MeV, respectively. Using the threshold-cross-section method, the ratios were normalized to the values 1.368 +- 0.030 and 1.116 +- 0.025, respectively, from 1.75 to 4.00 MeV.
Author : David T. Goldman
Publisher :
ISBN 13 :
Total Pages : 680 pages
Book Rating : 4.3/5 (243 download)
Download or read book Neutron Cross Sections and Technology written by David T. Goldman and published by . This book was released on 1968 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. Younes
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (316 download)
Download or read book Tables of Neutron-Induced Fission Cross Section for Various Pu, U, and Th Isotopes, Deduced from Measured Fission Probabilites written by W. Younes and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cross sections for neutron-induced fission of {sup 231,233}Th, {sup 234,235,236,237,239}U, and {sup 240,241,243}Pu are presented in tabular form for incident neutron energies of 0.1 {le} E{sub n}(MeV) {le} 2.5. The cross sections were obtained by converting measured fission probabilities from (t, pf) reactions on mass-A targets to (n, f) cross sections on mass-A + 1 neutron targets, by using modeling to compensate for the differences in the reaction mechanisms. Data from Britt et al. were used for the {sup 234}U(t, pf) reaction, from Cramer et al. for the {sup 230,232}Th(t, pf), {sup 236,238}U(t, pf), and {sup 240,242}Pu(t, pf) reactions, and from Britt et al. for the {sup 233,235}U(t, pf) and {sup 239}Pu(t, pf) reactions. The fission probabilities P{sub (t, pf)}(E{sub x}), measured as a function of excitation energy E{sub x} of the compound system formed by the (t, p) reaction, are listed in the tables with the corresponding deduced cross sections as a function of incident neutron energy E{sub n}, {sigma}{sub (n, f)}(E{sub n}). The excitation energy and incident neutron energy are related by E{sub x} = E{sub n} + B{sub n}, where B{sub n}, where B{sub n} is the neutron binding energy. Comparison with ENDF/B-VI evaluations of the well-measured {sup 234,235,236}U(n, f) and {sup 240,241}Pu(n, f) cross sections confirms the accuracy of the present results within a 10% standard deviation above E{sub n} = 1 MeV. Below E{sub n} = 1 MeV, localized deviations of at most {+-} 20% are observed.
Author :
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (682 download)
Download or read book The 237U(n, F) Cross Section written by and published by . This book was released on 2003 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this note is to combine existing information on the 237U(n, f) cross section to determine if some consistency can be obtained for the neutron induced fission excitation of 237U. The neutron induced fission cross section of the 6.8 day 237U was measured directly by McNally et al. in 1968 using the Pommard nuclear device test. At the same time critical assembly measurements were done at Los Alamos using the Flattop assembly. A previous measurement was also made at LASL in 1954 with two different neutron sources, each peaked near 200 keV. The results were 0.66 " 0.10 b and 0.70 " 0.07 b for the (n, f) cross section. More recently Younes and Britt have reanalyzed direct reaction charged particle data of Cramer and Britt that had determined the fission probability of the 238U compound nucleus as a function of nuclear excitation energy. They have combined fission probabilities with calculated neutron absorption cross sections, including corrections for the differences in angular momentum between the direct and neutron induced reactions. From this analysis they have extracted equivalent 237U(n, f) cross sections. The technique for extracting surrogate (n, f) cross sections from (t, pf) data has been demonstrated in a recent publication for the test case 235U(n, f). In addition to this experimental information, Lynn and Hayes have recently done a new theoretical study of the fission cross sections for a series of isotopes in this region. A summary plot of the data is shown in Fig. 1. Below 0.5 MeV the McNally, Cowan, and Younes-Britt results are in reasonable agreement. The average cross section in the Younes-Britt results, for En = 0.1 to 0.4 MeV, is 0.80 times the McNally values which is well within the errors of the McNally experiment. Above 0.5 MeV the McNally results diverge toward higher values. It should be noted that this divergence begins approximately at the 237Np threshold and that 237Np is the daughter of the 6.8 day 237U decay.
Download or read book Systematics of Neutron-induced Fisson Cross Sections Over the Energy Range 0. 1 MeV to 15 MeV and at 0. 0253 EV. written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous studies by Behrens have provided evidence of systematic behavior in neutron-induced fission cross sections in the incident neutron energy range 3 to 5 MeV. Recently measured fission cross-section ratios revealed this behavior. In this report, these measurements and those of others are used to illustrate the behavior of fission cross sections over the neutron energy range 0.1 MeV to 15 MeV. Similar trends are seen at 0.0253 eV, as revealed by thermal cross-section measurements. 12 figures.
Download or read book Measurement of the Neutron-induced Fission Cross Section of 241Pu Relative to 235U from 0.001 to 30 MeV. written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The ratio of the neutron-induced fission cross sections of 241Pu relative to that of 235U was measured with fission ionization chambers at the LLL 100-MeV electron linear accelerator. The time-of-flight technique was used to measure the cross-section ratio as a function of neutron energy from 0.001 to 30 MeV. The continuous energy spectrum of the neutron source allowed us to cover the entire energy range in one measurement. Pulse height distributions were also measured as functions of energy over broad energy bands. These data were used to estimate the energy variation in the efficiency to be less than 0.75 percent. The threshold cross-section method normalized the ratio independent of other cross-section measurements to 1.268 +- 0.022 in the interval 1.75 to 4.00 MeV. The ratio was also taken to thermal neutron energy where it was normalized to evaluated thermal fission cross sections and the resulting ratio in the 1.75- to 4.00-MeV interval was 1.242 +- 0.021. Corrected for the impurities in the 241Pu sample, the average of these two values resulted in a $sup 241$Pu:235U fission cross-section ratio of 1.251 +- 0.016 for the normalization interval. Typical energy resolution is 5 percent at 20.0, 1.0, and 0.1 MeV. Most of the data have counting uncertainties smaller than 4 percent, expressed as a standard deviation. Systematic errors are discussed, and current results are compared with previous measurements. Tables of our data are included. (9 tables, 8 figures) (auth).
Download or read book Neutron-induced Fission-cross-section Measurements and Calculations of Selected Transplutonic Isotopes written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The neutron-induced fission cross sections of /sup 242m/Am and 245Cm have been measured over an energy range of 10−4 eV to approx. 20 MeV in a series of experiments at three facilities during the past several years. The combined results of these measurements, in which only sub-milligram quantities of enriched isotopes were used, yield cross sections with uncertainties of approximately 5% below 10 MeV relative to the 235U standard cross section used to normalize the data. We summarize the resonance analysis of the /sup 242m/Am(n, f) cross section in the eV region. Hauser-Feshbach statistical calculations of the detailed fission cross sections of 235U and 245Cm have been carried out over the energy region from 0.1 to 5 MeV and these results are compared with our experimental data.
Author : Dan Gabriel Cacuci
Publisher : Springer Science & Business Media
ISBN 13 : 0387981306
Total Pages : 3701 pages
Book Rating : 4.3/5 (879 download)
Download or read book Handbook of Nuclear Engineering written by Dan Gabriel Cacuci and published by Springer Science & Business Media. This book was released on 2010-09-14 with total page 3701 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an authoritative compilation of information regarding methods and data used in all phases of nuclear engineering. Addressing nuclear engineers and scientists at all levels, this book provides a condensed reference on nuclear engineering since 1958.
