Download or read book The Fission Cross Sections of Some Thorium Uranium Neptunium and Plutonium Isotopes Relative to 235U written by J. W. Meadows and published by . This book was released on 1983 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fission Cross Sections of Some Thorium Uranium Neptunium and Plutonium Isotopes Relative to 235U written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Earlier results from the measurements, at this Laboratory, of the fission cross sections of 23°Th, 232Th, 233U, 234U, 236U, 238U, 237Np, 239Pu, 24°Pu, and 242Pu relative to 235U are reviewed with revisions to include changes in data processing procedures, alpha half lives and thermal fission cross sections. Some new data have also been included. The current experimental methods and procedures and the sample assay methods are described in detail and the sources of error are presented in a systematic manner. 38 references.

Download or read book The Fission Cross Section Ratios and Error Analysis for Ten Thorium Uranium Neptunium and Plutonium Isotopes at 14 74 MeV Neutron Energy written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The error information from the recent measurements of the fission cross section ratios of nine isotopes, 23°Th, 232Th, 233U, 234U, 236U, 238U, 237Np, 239Pu, and 242Pu, relative to 235U at 14.74 MeV neutron energy was used to calculate their correlations. The remaining 36 non-trivial and non-reciprocal cross section ratios and their errors were determined and compared to evaluated (ENDF/B-V) values. There are serious differences but it was concluded that the reduction of three of the evaluated cross sections would remove most of them. The cross sections to be reduced are 23°Th - 13%, 237Np - 9.6% and 239Pu - 7.6%. 5 refs., 6 tabs.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 1176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutron Fission of 235 237 239U and 241 243Pu written by and published by . This book was released on 2003 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a recent paper submitted to Phys. Rev. C they have presented estimates for (n, f) cross sections on a series of Thorium, Uranium and Plutonium isotopes over the range E{sub n} = 0.1-2.5 MeV. The (n, f) cross sections for many of these isotopes are difficult or impossible to measure in the laboratory. The cross sections were obtained from previous (t, pf) reaction data invoking a model which takes into account the differences between (t, pf) and (n, f) reaction processes, and which includes improved estimates for the neutron compound formation process. The purpose of this note is: (1) to compare the estimated cross sections to current data files in both ENDF and ENDL databases; (2) to estimate ratios of cross sections relatively to 235U integrated over the ''tamped flattop'' critical assembly spectrum that was used in the earlier 237U report; and (3) to show the effect on the integral cross sections when the neutron capturing state is an excited rotational state or an isomer. The isomer and excited state results are shown for 235U and 237U.

Download or read book Fission Cross Sections of Thorium 232 Uranium 233 235 and 236 Plutonium 239 Relative to Uranum 238 for 14 MeV Neutrons written by Warren Nyer and published by . This book was released on 1950 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Fission Cross Sections of 233U 234U 237Np 239Pu 240Pu and 241 Pu Relative to that of 235U for Neutrons in the Energy Range 1 MeV to 14 MeV written by P. H. White and published by . This book was released on 1966 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Evaluation of Effective Plutonium Cross Sections in Reactivity Calculations written by E. Fein and published by . This book was released on 1961 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Cross Sections for Technology written by Joseph L. Fowler and published by . This book was released on 1980 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fission Cross Section of 239Pu Relative to 235U from 0 1 to 10 MeV written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The fission cross ratios of 239Pu to 235U were measured over the neutron energy range of 0.1 to 10 MeV. The atom ratios of the samples were based on their relative thermal fission rates and on their alpha activity.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1967 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fission Cross Section of 239Th and 232Th Relative to 235U Threshold to 10 MeV Cross Sections written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The fission cross sections of 23°Th and 232Th were measured relative to 235U from near threshold to near 10 MeV. The weights of the thorium samples were determined by isotopic dilution. The weight of the uranium deposit was based on specific activity measurements of a 234U-235U mixture and low geometry alpha counting. Corrections were made for thermal background, loss of fragments in the deposits, neutron scattering in the detector assembly, sample geometry, sample composition and the spectrum of the neutron source. Generally the systematic errors were approx. 1%. The combined systematic and statistical errors were typically 1.5%. 17 references.

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Engineering written by Malcolm Joyce and published by Butterworth-Heinemann. This book was released on 2017-09-18 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear Engineering: A Conceptual Introduction to Nuclear Power provides coverage of the introductory, salient principles of nuclear engineering in a comprehensive manner for those entering the profession at the end of their degree. The nuclear power industry is undergoing a renaissance because of the desire for low-carbon baseload electricity, the growing population, and environmental concerns about shale gas, so this book is a welcomed addition to the science. In addition, users will find a great deal of information on the change in the industry, along with other topical areas of interest that are uniquely covered. Intended for undergraduate students or early postgraduate students studying nuclear engineering, this new text will also be appealing to scientifically-literate non-experts wishing to be better informed about the ‘nuclear option'. Presents a succinct and clear explanation of the key facts and concepts on how nuclear engineering power systems function and how their related fuel supply cycles operate Provides full coverage of the nuclear fuel cycle, including its scientific and historical basis Describes a comprehensive range of relevant reactor designs, from those that are defunct, current, and in plan/construction for the future, including SMRs and GenIV Summarizes all major accidents and their impact on the industry and society

Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutron Standards and Applications written by Charles D. Bowman and published by . This book was released on 1977 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1984 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: