Download or read book Gamma Rays from 14 Mev Neutron Bombardment of C O Al Fe and Pb written by M. E. Battat and published by . This book was released on 1953 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emission Of Gamma Rays from Various Materials Pulsed with 14 MeV Neutrons written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have performed a number of experiments at LLNL recently to investigate the leakage of gamma rays from spheres of selected materials pulsed centrally with 14-MeV neutrons. Such spectral information may be carefully compared to calculational results to validate the transport models, particularly the nuclear cross section data base. In the present case, the TART code and SANDYL codes are used to explicitly calculate the observable, the recoil electron spectrum. The materials studied were H2O, 6LiD, Be, C, 14N, CF2, Al, Si, Ti, Fe, Cu, Ta, W, Au, Pb, Th, and 238U. Generally, agreement was good between experiment and calculation. However, for some, the calculations significantly underestimated or overestimated experiment. For oxygen (i.e., H2O), the ENDL cross section set led to a sizeable calculational overestimate. Re-examination led to a large improvement. For tungsten, the calculated output was approx. 30% below experiment. A re-evaluation led to closer agreement. 16 refs., 10 figs., 1 tab.
Download or read book Gamma Rays Resulting from Interactions of 14 7 Mev Neutrons with Magnesium Aluminum Calcium Titanium and Iron written by William E. Thompson and published by . This book was released on 1965 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The prompt gamma rays resulting from the interaction of 14.7 MeV neutrons with the nuclei of the elements magnesium, aluminum, calcium, titanium and iron have been investigated. Cross sections for the production of many of these gamma rays have been measured by observing them with a carefully shielded detector during neutron bombardment of a given elemental sample. It is found that the n, n'-gamma process predominates and that gamma rays resulting from the deexcitation of the lowest energy levels, with one or two notable exceptions, are generally most prominent. Other processes including n, p-gamma, n, alpha-gamma, and n, d-gamma are also observed. Some of the most improtant gamma rays are found to have the following elemental production cross sections (in millibarns per steradian at 90 deg): 1:37 Mev gamma ray from Mg, 30. 9= 3.1; 1.81 MeV gamma ray from Al, 13.7= 2.0; 3.73 Mev gamma ray from Ca, 9.0= 1.4; 0.99 Mev gamma ray from Ti, 51.9= 5.2; and 0.85 MeV gamma ray from Fe, 57.6= 5.8. (Author).
Download or read book The Attenuation of Gamma Rays and Neutrons in Reactor Shields written by Herbert Goldstein and published by . This book was released on 1957 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Nuclear Radiation on Structural Metals written by Frederic R. Shober and published by . This book was released on 1961 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of fast-neutron (>1 Mev) irradiation on the mechanical properties of structural metals and alloys was studied. Although the yield strengths and ultimate tensile strengths are increased su stantially for most materials, the ductility suffers severe decreases. This report presents these changes in properties of several structural metals for a number of neutron exposures within the 1.0 x 10 to the 18th power to 5.0 x 10 to the 21st power n/sq cm range. Data summarizing these effects on several classes of materials such as carbon steels, low-alloy steels, stainless steels, Zr-base alloys, ni-base alloys, Al-base alloys, and Ta are given. Additional data which show the influence f irradiation temperatures and of post-irradiation annealing on the radiation-induced property changes are also given and discussed. Increases as great as 175% in yield strength, 100% in ultimate strength, and decreases of 80% in total elongation are reported for fast-neutron exposures as great as 5 10 to the 21st power n/sq cm. (Author).
Download or read book Gamma Rays Resulting from Interactions of 14 7 Mev Neutrons with Sodium Sulfur Chlorine Potassium and Lead written by W. E. THOMPSON and published by . This book was released on 1966 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The prompt gamma rays resulting from the interaction of 14.7 MeV neutrons with the nuclei of the elements sodium, sulfur, chlorine, potassium and lead, were investigated. Cross sections for the production of many of these gamma rays were measured by observing them with a carefull shielded detector during neutron bombardment of a given elemental sample. It was found that the n, n'-gamma process generally predominates and that gamma rays resulting from the deexcitation of the lowest energy levels, with one or two notable exceptions, are usually most prominent. Gamma rys attributable to n, p-gamma, n, alpha-gamma, and n, d-gamma process were also observed. In chlorine and potassium, gamma rays attributable to the n, d-gamma process are unusually preponderant. Some of the most important gamma rays were found to have the following elemental production cross sections (in millibarns per steradian at 90 deg): 0.44 MeV gamma ray from Na, 39.5 plus or minus 4.5; 2.24 MeV gamma ray from S, 15.3 plus or minus 1.7; 2.15 MeV gamma ray from Cl, 17.1 plus or minus 2.0; 2.17 MeV gamma ray from K, 19.3 plus or minus 2.5; 2.62 MeV gamma ray from Pb, 20.3 plus or minus 2.7. (Author).
Download or read book 14 MeV Neutrons written by Vladivoj Valkovic and published by CRC Press. This book was released on 2015-08-25 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the often difficult and time-consuming effort of performing experiments with fast (14 MeV) neutrons, these neutrons can offer special insight into nucleus and other materials because of the absence of charge. 14 MeV Neutrons: Physics and Applications explores fast neutrons in basic science and applications to problems in medicine, the envir
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation for Gamma Rays Resulting from the Bombardment of As75 with 14 MEV Neutrons written by Wyatt Wendell Givens and published by . This book was released on 1957 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 1104 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 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gamma Rays from n N gamma Rays Interactions of 2 8 Mev Neutrons with Magnesium Aluminum Silicon Titanium and Iron written by Ferdinand C. ENGESSER and published by . This book was released on 1965 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gamma rays resulting from (n, n' gamma ray) interactions of 2.8 MeV neutrons with the nuclei of the elements magnesium, aluminum, silicon, titanium and iron have been investigated. Cross sections for the production of many of these gamma rays are reported. The most important gamma ray from each element is found to have the following elemental production cross section in millibarns per steradian at 90 = 20 deg: 1.37 MeV gamma ray from Mg, 35.2 = 4.0; 1.01 MeV gamma ray from Al, 19.8 = 2.2; 1.78 MeV gamma ray from Si, 41.0 = 4.9; 0.99 MeV gamma ray from Ti, 74.0 = 9.0; and 0.85 MeV gamma ray from Fe, 96.5 = 11.5. Further, it is shown that a correlation appears to exist between the reduced quadrupole transition probability of a nuclear state and the excitation of that state by neutron inelastic scattering. (Author).
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1972 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron Physics Division Annual Progress Report for Period Ending written by Oak Ridge National Laboratory. Neutron Physics Division and published by . This book was released on 1968-05-31 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Reports written by and published by . This book was released on 1961 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
