Download or read book Determination of the Damage energy Cross Section of 14 MeV Neutrons from Critical property Changes in Irradiated Nb3Sn written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Short samples of single-core and 19-core multifilament wires in bronze jackets have been irradiated with 14-MeV neutrons to a total fluence of 2 x 1018 n/cm2 using the Livermore Rotating Target Neutron source. At fluences of 1 and 2 x 1018 n/cm2 the critical temperature was measured, and also the critical current as a function of applied transverse magnetic field up to 175 kG to ascertain the radiation-induced changes in these properties. Measurements as a function of fluence of identical samples following reactor-neutron irradiation established the baseline for comparison of the 14-MeV results. By comparing the changes observed and relating them to the spectrum-averaged damage-energy cross section for the HFBR neutrons, a value for the damage-energy cross section for 14-MeV neutrons has been deduced of 313/sup +50/0 bkeV. Comparison of the critical current vs applied field for the two types of irradiation indicates that the flux-pinning characteristics are different for equal damage energies. This can be explained by a larger cascade region produced by the 14-MeV neutrons relative to those produced by fission-reactor neutrons with a coupled reduced resistivity increase for 14-MeV neutrons with respect to fission-reactor neutrons for equivalent damage energies.

Download or read book Symposium on Neutron Cross sections from 10 to 50 MeV written by M. R. Bhat and published by . This book was released on 1980 with total page 470 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 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the second Topical Meeting on the Technology of Controlled Nuclear Fusion written by G. L. Kulcinski and published by . This book was released on 1976 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Second Topical Meeting on the Technology of Controlled Nuclear Fusion written by and published by . This book was released on 1976 with total page 392 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. Technical Information Center and published by . This book was released on 1977 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inventory of advanced energy technologies and energy conservation research and development 1976 1978 written by Oak Ridge National Laboratory and published by . This book was released on 1979 with total page 2238 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 1979 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book RTNS II Utilization Plan written by United States. Department of Energy. Materials and Radiation Effects Branch and published by . This book was released on 1978 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Topical Meeting on the Technology of Controlled Nuclear Fusion written by and published by . This book was released on 1976 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-04 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book TEM Investigation of 14 MeV Neutron Damage written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: From joint meeting of the American Nuclear Society and the Atomic Industrial Forum and Nuclear Energy Exhibition; San Francisco, California, USA (11 Nov 1973). 14-MeV neutron damage has been investigated in gold by means of transmission electron microscopy (TEM). The sites of energetic displacement cascades are visible due to the presence of vacancy clusters formed by the collapse or rearrangement of vacancies within the depleted zones. In 14-MeV n- induced cascades, a strong tendency towards subcascade formation is found. On the average 1.8 clusters are formed per cascade. Individual cascades with as many as 6 subcascades have been found. The number densities of clusters as well as the number densities of cascades are proportional to the fluence. The cross section for the formation of visible cascades is sigma /sub c/ = 3.3 x 10/sup - 24/ cm2. It can be shown that recoi ls from elastic neutron scattering events can account for only about 20% of the visible cascades. The cross section corresponding to the balance of the observed cascades is, within experimental error, equal to the nonelastic neutron scattering cross section. This indicates that all nonelastic scattering events lead to the formation of a visible cascade. Quantitative agreement with what is expected from heavy ion bombardments regarding the cross sections involved is found, however, estimates of the average cascade energy in the 14MeV neutron bombardments are somewhat higher than expected. (10 figures, 29 referenccs) (auth).

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 1977-06-15 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Special Purpose Materials written by United States. Department of Energy. Office of Fusion Energy and published by . This book was released on 1980 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metals Abstracts written by and published by . This book was released on 1990-07 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Second Topical Meeting on the Technology of Controlled Nuclear Fusion September 21 23 1976 Richland Washington written by and published by . This book was released on 1976 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: